Yerofei Sedov was considered Agafya's only neighbour deep in the forest about 500 metres up the Abakan Range, in south-western Siberia. Picture: Denis Mukimov/danlux.livejournal.com

A geologist who lived a reclusive life in a hut beside the famous Siberian hermit Agafya Lykova has died, leaving the woman alone in the taiga. Yerofei Sedov was considered her only neighbour deep in the forest about 500 metres up the Abakan Range, in south-western Siberia.

Over the years he looked out for 71-year-old Agafya, the sole survivor of a family of Old Believers that had cut themselves off from civilisation for decades.

'My father died in his 77th year of life, as he wanted to on the Yerinat River,' said Sedov’s son Nikolay. 'All this happened on May 3 but I don't know any details. Some tourists came to Agafya’s residence and then called me when they came back.

'I can't say what happened but my father was a rather old man. Agafia buried him. She did the right thing. He died but it was rather warm weather so I’m sure she didn’t have to wait until someone arrived to take his body. I'm grateful for that, since now he will forever be on his treasured Yerinat. As soon as possible I will fly to his grave, though when that will be is hard to say.'

Sedov's death was also confirmed by researchers working nearby checking soil and water samples following a rocket launch from the cosmodrome at Baikonur.

Sedov’s friendship with the hermit goes back many years. He had worked as a master driller in the geological expedition that found the Lykov family deep in the forest in the late 1970s. Picture: Denis Mukimov/danlux.livejournal.com

Officials from the Khakassky State Nature Reserve have gone to Agafya's hut to find out more about the circumstances of the death, and police will visit the site too. Once they have arrived at the remote location, more details are likely to emerge.

Sedov’s friendship with the hermit goes back many years. He had worked as a master driller in the geological expedition that found the Lykov family deep in the forest in the late 1970s.

At one point he saved her late father from certain death when, having not heard from the Lykovs for a long time, he visited them and found him seriously ill. Exhausted and almost unconscious they were given food, hot tea and shelter. From then on he has felt a strong kinship with the family, and Agafya in particular after her father eventually died in 1988.

About 18 years ago he lost a leg after a severely frostbitten toe was not treated properly. After that, doctors advised him to spend more time in the open air so he moved to the Yerinat River beside Agafya and built himself a hut 100 metres from her ramshackle home.

He did go and see his family from time to time, but he always returned to the taiga isolation. His son, Nikolay, came to visit him in April, just a few weeks before he died.

'It was Holy Week,' recalled Nikolay. 'My father looked very tired. He and Agafya were fasting, but he was not sick. We didn’t talk about anything special, just our everyday lives.'

Over the years Yerofey Sedov looked out for 71-year-old Agafya, the sole survivor of a family of Old Believers that had cut themselves off from civilisation for decades. Picture: Kemerovo region press service

In a rare interview in December last year Agafya said that her neighbour had been suffering from an illness, and she had asked him to stay away, fearing she would catch it. She said: 'He was coughing and coughing and I got scared. For me it’s case of if you cough, get away from here.'

The Lykovs were members of a fundamentalist Russian orthodox sect that had been persecuted since the days of Peter the Great in the 18th century, and had fled deep into the Siberian wilderness amid a Stalinist purge of religions in 1936.

As the years passed they retreated deeper and deeper into forests, foraging for whatever they could find and once even being forced to eat their leather shoes to survive. Agafya was the fourth child of Karp and Akulina Lykov and for the first 35 years of her life she had no contact at all with anyone outside her family.

Their full incredible story only emerged in the 1980s, turning them into a national phenomenon although Agafya chose to remain on the little plot.