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Join us year-round, rain or shine, for a Natural History tour into Rat’s Nest Cave - a wild, undeveloped cave under Grotto Mountain; just outside of Canmore, Alberta. For school Groups we can offer Curriculum/Grade specific interpretation if you are interested. (just let us know what your focus is) Rat’s Nest Cave is a special place. In 1987 it was designated a Provincial Historic Resource because of its incredible archaeological significance. It is home to ancient pictographs, 7000 year old bones, and beautiful cave formations. At over 4km long, Rat’s Nest Cave is one of the longest caves in Canada. The water-sculpted passages of the cave offer us seemingly endless opportunities to learn and explore. At 5 degrees celsius all year round, the cave is a cool but comfortable destination every day of the year, a trait enjoyed by cave residents like bushy-tailed wood rats, and North America’s smallest mammal - the pigmy shrew. With no lights, handrails or walkways we are left to enjoy the cave in its natural state, just as the original explorers did. Canmore Cave Tours has been offering tours at Rat’s Nest Cave, since 1992.