A Stone Age family of five crawled through a narrow Italian cave 14,000 years ago because they were curious about what was inside, according to a new study. They carried makeshift torches and wooden sticks to guide them through the darkness – and may even have brought their dog in too.

Researchers analysed the ancient tracks left in a layer of clay inside a deep cave of Bàsura in the Toirano cave complex in northern Italy.

It is the first time crawling has been documented in ancient humans, according to researchers from the University of Witwatersrand in South Africa.

Around 180 prints were made by these curious prehistoric explorers who crawled through the low cave using their hands, knees and the balls of their feet. The youngest child was probably only two years old, and would have been following two older siblings aged around six and 11.

The family walked close to the side of the cave and have left charcoal-smudged handprints on the wall. The children picked up mud from the floor and splattered it on the wall with their fingers, according to the study published in eLife.

“Most likely they were pushed into the cave by simple curiosity and a sense of wonder for unexplored places,” first author Marco Romano, Postdoctoral Fellow at the University of the Witwatersrand, South Africa told Ars Technica.

These are ancient human footprints impressed on different surfaces in the cave of Bàsura ( Marco Avanzini )

Shortly after the family left the cave experts belive a stalactite fell, which blocked the inner chamber and meant the traces of their little trip was preserved.

In the 1950s it was opened up using dynamite. It was then that the human traces were found.

Scientists used modern dating methods and software to analyse the structure of the tracks. “Together, these approaches allowed us to construct a narrative of how the humans entered and exited the cave, and their activities once they were inside,” said Dr Romano.

The breathtaking photos of Icelandic ice caves Show all 14 1 / 14 The breathtaking photos of Icelandic ice caves The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Guide Einar Runar Sigurdsson is seen ice climbing inside the 'Waterfall Cave' PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Looking up from inside the 'ABC cave' - which stands for Amazing Blue Cave. Guide Einar Runar Sigurdsson can be seen ice climbing on the glacier outside. PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Guide Einar Runar Sigurdsson is seen ice climbing inside the 'Waterfall Cave' PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Guide Einar Runar Sigurdsson is seen ice climbing inside the 'Waterfall Cave' PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Inside the 'ABC cave' - which stands for Amazing Blue Cave. PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Inside the 'ABC cave' - which stands for Amazing Blue Cave. This view shows a snow storm outside the entrance to the cave. PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Inside the 'ABC cave' - which stands for Amazing Blue Cave. Guide Einar Runar Sigurdsson is seen taking a photo at the entrance to the cave PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: On top of the Vatnajökull glacier PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Inside the 'ABC cave' - which stands for Amazing Blue Cave. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Looking up from inside the 'ABC cave' - which stands for Amazing Blue Cave. Guide Einar Runar Sigurdsson can be seen ice climbing on the glacier outside. PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Inside the 'ABC cave' - which stands for Amazing Blue Cave. Guide Einar Runar Sigurdsson is seen taking a photo at the entrance to the cave PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: Inside the 'ABC cave' - which stands for Amazing Blue Cave PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony The breathtaking photos of Icelandic ice caves Icelandic ice caves in Vatnajökull Wednesday 25th November 2015, Vatnajökull national park, Iceland: Photographer Mikael Buck with assistance from renowned local Icelandic guide Einar Runar Sigurdsson, explored the frozen world of Vatnajökull glacier in Iceland using Sony’s world first back-illuminated full-frame sensor – which features in the α7R II camera. His images were taken without use of a tripod or any image stitching techniques in photoshop. This was made possible through Sony’s new sensor technology, allowing incredibly detailed low-light hand held photography. Previously images this detailed would have required carrying bulky equipment to the caves, some of which can require hiking and climbing over a glacier for up to two hours to to access. This picture: The view on top of the Vatnajökull glacier whilst hiking to access the caves PR Handout - editorial usage only. Photographer's details not to be removed from metadata or byline. For further information please contact Rochelle Collison at Hope & Glory PR on 020 7014 5306 or rochelle.collison@hopeandglorypr.com Copyright: © Mikael Buck / Sony 07828 201 042 / mikaelbuck@gmail.com © Mikael Buck/Sony

“In our study, we wanted to see how ancient humans explored this fascinating cave system. Specifically, we set out to discover how many people entered the cave, whether they explored as individuals or as a group, their age, gender and what kind of route they took once inside the cave,” he said.

The findings suggest that young children were active group members during the Stone Age, even when carrying out dangerous activities.

Such excursions were made for work and pleasure. “Hunter-gatherers may therefore have been driven by fun activities during exploration, as well as simply the need to find food,” said Dr Romano.

Based on 3D models of knee prints, scientists believe the family were in good shape and probably did a lot of exercise as hunter gatherers.