Previous campers have put great effort into the making of flat spaces, mainly of consisting of flat rocks and gravel. It's a fine place to camp, though sleeping can be a problem because of the altitude and as climbers get up at 1AM to get to the summit at sunrise. Bring all food from La Paz (pasta is not recommended at this altitude, as the low boiling temperature turns it into an unappealing wheat porridge). Rock Camp is right by the glacier and water while there is acquired by melting snow.