Known by locals as the Little River Cemetery Sinkhole, this almost perfectly circular sinkhole is simply amazing. At low tide you can walk through the wave-cut tunnel to the tide pools at the bottom of the bluff; at high tide you can sit on the tiny sandy beach and look at the tunnel as the waves blast through. Either way, the feeling of being within this natural phenomenon is borderline sacred. To get here, park across from the Little River Cemetery on Highway 1, walk to the southwest corner of the cemetery, and look for a small opening in the chain-link fence. The sinkhole is only a few dozen yards down the trail, but be prepared to enter and exit the hole on all fours or you might end up buried alongside it.