[3] The mountain itself is named after Canadian Army Private Torindo John Bisaro, an Italian-born immigrant who lived in nearby Fernie and fought for Canada in the Second World War.

[4] An infantryman, Bisaro was a member of the Royal Highland Regiment of Canada, aka "the Black Watch", and was registered as killed in action on 28 July 1944, at the age of 21.

The Black Watch, the cave's second and deepest pitch (vertical drop), is named in reference to Torindo Bisaro's unit.

[5] The Black Watch is the deepest single pitch (vertical drop) in the cave, measuring 105 metres (344 ft) deep, comparable to a 35-storey office building.

[2] Soil samples from the cave have also been studied at Thompson Rivers University for evidence of microfossils dating back to the Last Glacial Maximum.

[4][7] A slot entrance near the top of Mount Bisaro at an elevation of 2,350 metres (7,710 ft) above sea level,[6] it is a small and narrow passage typically surrounded by snow which is only accessible by helicopter.

A previously-uncharted passage inside Bisaro Anima was discovered in August 2018 and found to extend almost to the surface, suggesting an undiscovered entrance may exist.

[3][5] The Black Watch, the second pitch, is located a short distance from the bottom of Trial By Fire and extends an additional 105 metres (344 ft) down.

Deeper than Sketch City is Canal du Nord, another horizontal passage which runs parallel to the Sunday Stroll and connects to it through a steep incline.

[5] The source of the Rhine is unknown, as spelunkers have been unable to climb the enormous mist-filled aven where the waterfall feeding it enters the caves.

[5] Alternatively, the Traverse leads into a narrow and boulder-filled series of passages known, in order, as Bloody Sunday, the Trenches, and the Collapse of the Third Reich.

Another passage, Did Nazi That Coming, is accessible from the Side Pit and contains at least eight phreatic tubes leading to as-yet unexplored sections of the cave system.

[9][12] Adjacent to Camp II is Vimy Ridge, a 40 metres (130 ft)-high room containing a very steep scree slope followed by several other pitches which become steeper as the depth of the cave increases.

[3][5][10] It is possible that unexplored sections of the cave, such as the phreatic tubes in Did Nazi That Coming, may allow cavers to navigate past the sump without diving.

Although the cave was identified as a place of interest it was not explored extensively due to a limited amount of rock-climbing equipment,[12] though they were able to proceed past the first two pitches and through the section now known as Sunday Stroll.

[3] Over thirty people from Calgary, Edmonton, Fernie, Montreal, Vancouver, Water Valley, the United States, and the United Kingdom have entered Bisaro Anima,[10][15] including: In 2017, Jeremy Bruns returned to the site as the leader of the Bisaro Plateau Caves Project, a geographical survey supported by the Alberta Speleological Society and Royal Canadian Geographical Society with plans to run two expeditions in mid-October and early January.

The August expedition consisted of 22 volunteers and at least one dog, most of whom did not enter Bisaro Anima but instead searched for additional entrances to the cave.

[7] Participants in the survey included several members of previous expeditions into the cave as well as experienced cavers from groups like the Société québécoise de spéléologie (SQS).

[6][17] In November 2018, the discovery of Sarlacc's Pit in Wells Gray Provincial Park led geologist David Bressan to suggest that the as-yet unexplored cave could be deeper than Bisaro Anima.

On the second day, expedition leader Kathleen Graham fell while transporting lead weights and a cave pack down Vimy Ridge from Camp II, breaking her ankle.

The lack of easy accessibility and available training combined with the small number of recreational cavers in Western Canada make it difficult for cavers to reach the cave without being part of an organized expedition,[19] and entering the cave involves navigating two enormous pitches using ropes which require good physical fitness and technical expertise to descend safely.

[19] In a comment to Global News, expedition member and ABCCRS provincial coordinator Christian Stenner warned: "The consequences of an injury in this environment are tremendous, due to the hazardous conditions and exceptional remoteness.

"[4]Dangers faced by spelunkers in Bisaro Anima include falling rocks, deep canyons, narrow passages,[12] steep drops, collapsing floors,[5] and the potential for asphyxiation while diving.