rock

Professional photo guide Vincent Lawrence of Seal Harbor, Maine, left, and his client Frank Gallagher, of Silver Spring, Md., move to a new position while photographing the rocky coast of Maine's Acadia National Park at dawn, Friday, Oct. 3, 2014. A 15-inch-high rock cairn stands in the foreground.

Robert F. Bukaty/AP

A Professional photo guide and his client move to a new position while photographing the rocky coast of Maine’s Acadia National Park at dawn on Friday

An Orthodox Christian walks between the famous monolithic rock-cut churches during a Good Friday celebration in Lalibela May 3, 2013.

Goran Tomasevic/Reuters

An Orthodox Christian walks between the famous monolithic rock-cut churches during a Good Friday celebration in Lalibela, Ethiopia.