Polak and I are not the most aggressive downhill riders. However, before we got to the rim trail we rode down some fairly rocky areas in the pine forest. At one point, Polak flew by me at a speed that I thought was unusually fast for us. I mumbled "he's going to crash" as I poked along down the trail. A few minutes later, I caught up to him as he lay among the sharp rocks, bike tangled in his monkey limbs, blood seeping out of several wounds.