>Do you think more than a dozen people would disturb >that area in a given year?
One of the removed caches, the Fargo Underground, is a 3 mile hike into a wilderness area. (I walked in to place the cache.) It had been in place over a month without any visitors. The ranger that removed it was the first person to find it! While i was placing the cache 4 motorcycles illegally drove down the canyon unhindered. Those 4 bikes, and certainly there are lots more based on the tracks along the wash, impact the area thousands of times more than my little Altoids tin cache ever would. Of course, you have to actually catch illegal motorcylists and they just stay in the wilderness since the NPS won't drive there either.