Banff staff explore unknown underground structure found at Lake Minnewanka (opens original article in a new tab)

Parks Canada is investigating an unknown underground structure near Lake Minnewanka after a ground collapse, with possible links to a 1940s campground.

• Parks Canada discovered an unknown underground structure near Lake Minnewanka after a ground collapse in May 2026.
• The structure, made of untreated wood and logs, may date back to before the 1950s or 1960s and could be linked to a 1940s campground.
• The site remains fenced off while experts assess its origin and significance.