Caveat
A projectile hole in the roof of the pavillion with a view of Space Boyz.
Most Potrero rock in its natural state has a crust of loose flakes, spiny agaves, and cactus - features hardly attractive to climbers. However, on the single pitch sport routes these will have been more or less cleaned off by the route's authors and the multitudes that have followed. The quality of the rock degrades however with elevation, and many popular multi-pitch routes remain peppered with often treacherous loose blocks, creating a potentially dangerous situations for the climbing party and (typically) for the crowds of climbers and partying Mexicans hundreds of feet below. Often the risk is redoubled by the fact that these long routes are near the easy end of the spectrum, typically attracting folks with little experience of climbing on chossy rock. Accidents due to loose rock happen in the Potrero with regularity every year and there have been several fatalities within the last decade. Also regular are rattlesnake and hornet encounters, especially very high on the routes! We cannot overemphasize that care should be exercised when climbing here. Helmets should be worn, other parties should not be followed, and popular walls located under multi-pitch routes should be avoided when there are parties up there. Many inexperienced parties are gung-ho to try their first multi-pitch routes here, mislead by their ostensible "sport" nature. Fatigue after many pitches of climbing, and inability to follow the route (it does not take much to venture onto very loose terrain here) have led many into dangerous situations. Please bring and wear a helmet and be careful!