National Geographic : 1909 May
488 THE NATIONAL GEOGRAPHIC MAGAZINE ILLUSTRATIONS OF A UNIQUE POT HOLE WORN IN A GRANITE BOULDER ON THE SHORES OF MONTEREY BAY, CALIFORNIA The pot hole is above the level of low tide, but is submerged at middle to high tides. The first photograph gives a near view of the boulder, which has a rounded top and is about 4 x 5 x 3 feet. It also shows the pebble or "nest egg" which has eroded the crevice. The second photograph shows the size of the hole. Photos from B. X. Tucker, Richmond, California.