Four Canadian men accused of vandalizing national parks around the United States have pledged to come back and face justice.

Charles Ryker Gamble, Alexey Andriyovych Lyakh, Justis Cooper Price-Brown and Hamish McNab Campbell went off the boardwalk at Yellowstone and dipped their hands into the Grand Prismatic Springs, according to a fellow visitor who reported them in May.

The four men, who go by the online nickname High On Life, say they 'travel around the world for a living and make fun and adventurous videos'.

All four have gone back to Canada, where they are based in Vancouver. Warrants for their arrest were enacted in May and have since been terminated.

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Alexey Andriyovych Lyakh, Hamish McNab Campbell Cross, Justis Cooper Price-Brown and Charles Ryker Gamble Cross (pictured left to right) are accused of vandalizing national parks

The four men dipped their hands into the Grand Prismatic Springs, according to a fellow visitor who reported them in May. One of them is pictured at the site

But Gamble, Lyakh, Price-Brown and Campbell will appear in Yellowstone court in Mammoth, Wyoming to face justice in November, according to their attorney.

'They're hopeful they can come back to the United States in November, apologize and pay the penalties, and get on with their lives,' lawyer Thomas Fleener told the Jackson Hole News & Guide.

Charges against the group have been piling up, coming from national parks in Utah, Colorado and Nevada.

High On Life members posted photos of themselves water-skiing behind a bus in March at the Bonneville Salt Flats in northwestern Utah.

Charges against the group have been piling up, coming from national parks in Utah, Colorado and Nevada. One of the men is pictured at Yellowstone

Walking on Yellowstone's Grand Prismatic Spring (pictured) can damage its delicate ecosystem, which is responsible for the spring's magnificent colors

'When people walk on the spring's bacterial mats (pictured with a member of High On Life), they leave damaging footprings, Yellowstone spokesperson Charissa Reid said in May

This could have caused permanent damage to the site, as the weight of a vehicle can wreck the ground's structure and prevent the formation of the dry crust in the future, geologist Brenda Bowen told the Salt Lake Tribune at the time.

Walking on Yellowstone's Grand Prismatic Spring can damage its delicate ecosystem, which is responsible for the spring's magnificent colors.

'When people walk on them it actually makes like white footprints in the bacterial mat,' Yellowstone spokesperson Charissa Reid said in May.

'Not only does it damage the bacterial mat but it also means that other people may be tempted to walk the same path.'

The four men's attorney is still collecting information from various national parks related to his clients' charges.

'New tickets keep coming in,' Fleener said.

The group is accused among other charges of flying a drone in a national park and operating a bicycle in restricted areas.

Gamble, Lyakh, Price-Brown and Campbell also face a fine of up to $3,000 for walking on a thermal zone in Yellowstone, according to Fleener.

All four are planning to attend the hearing in Mammoth on November 1.

Gamble, Lyakh, Price-Brown and Campbell will appear in Yellowstone court in November to face justice, according to their attorney. One of them is pictured at the park