The finding in France involves a series of non-figurative markings on the wall, which the team interpreted as finger-flutings, marks made by human hands.
The Lockport Cave boat ride is only a small part of the tour of the Erie Canal.
The site in question contained artifacts that are approximately 2,000 years old, dating back to the Roman-Byzantine era, according to the IAA.
Millican Dalton lived in a cave in the lake district for 40 years after giving up on city life in London.