The gas mask is in the renegade headquarters. Once you go through the butterfly glade &
get the shield from the native village, go down the river and enter the renegade fort
through the spiky towers, hence use the shield, then complete the fort and move onto the
headquarters to get the gas mask. Good Luck

The gasmask is in Renegade Headquarters.Use your shield to smash the spiked pillars and
then your'e at Renegade Fort you must kill all the renegade natives to pull the lever and
then go through.Once you go into the hole there will be Mini Ambush II,when you kill all
the natives on the spiked pillars and on the ground,the gasmask will appear and now you
have it. Pitfall: The big Adventure is my favorite Wii game.

how do i equip the gas mask?

try doing it your selfs noobs :-(

you know you shoudn't be talking like that!