The main "currency" carried when camping, hunting, or traveling to any remote location. Commonly mis-pronounced as 'toilet paper', mountain money is a vital part of any enjoyable outdoor vacation. (unless of course you enjoy fecal matter dripping out of your pants, and stinking like a turd)

Measured in rolls, one should always take at least two when going on any expedition.

Note: Paper towels are a poor and unexcuseable substitute for mountain money.