Toxic Gas Cave

Toxic Gas Caves are areas in the Glitter Gulch Mine world of Banjo-Tooie. There are two of them in total, with Banjo and Kazooie slowly losing oxygen bubbles in both.

In the first one is found near a waterfall, containing various boulders inside. These can be broken with the Bill Drill to reveal Jinjo in one of them. There is also a signpost inside the room that hints at the Crushing Shed's functionality.

The other one is found next to Wumba's Wigwam and is initially blocked by a pile of rocks which can be exploded with Detonator Banjo. It contains various items and a cage, where Canary Mary can be found inside. She tells of how she once had a job of going down to Glitter Gulch Mine to check for poisonous gas. If she died, the location would be deemed unsafe. She can be freed by mostly any attacks, such as the Rat-a-tat Rap or firing a Grenade Egg. Once freed, she will fly to another spot of the world where she can be challenged in a race.