Another hazard I took the liberty of identifying while in the park, was rock falls! On our second day in the park, we were lucky enough to have the sole park geologist give us a tour, and grease the geomorph skids for the following days to come. On our walk through the valley meadows, he pointed out rock falls and their hazardous nature.
He told us how comfortable we should feel in our tarp tents located closer to the middle of the valley. He told us that there is at around a dozen rock falls in a year, and a significant one in a decade. We stayed in Curry Village. A few years back, there was tarp tents built closer to the valley walls. They are not there anymore because a house or two got steam rolled by a car sized boulder. When going back to the village, I walked towards the south and closer to the wall. The steam rolled huts were replaced by an ampitheatre. They found that there was a significant risk and so they started building the huts closer to the center of the valley.
Having such a large economy fed from tourism, we can only expect growth. So an interesting question to ask is: how long until we are forced to flirt with higher risk property?
The link below is the source I've used for tourism numbers.
http://www.nps.gov/yose/naturescience/park-statistics.htm
