Force of Nature is the thin crack system right of Call Me Slim. Begin by climbing a slightly right-angling broken crack until possible to step left to blocky face ending on the ledge. If cherry-picking the "best" line, gain the ledge by starting on Slim, but since you probably did Slim to warm up, consider diversifying by taking the start described here. Above the ledge, a small apex roof poses the first difficulty, followed by some thin jamming to face climbing past five bolts (some interspersed gear) to another thin crack heading toward a crack through a roof band. Pull the roof and continue up a 1-inch crack to the chains. Named to memorialize a full day of cleaning.