1832 29 Dec. 433/1 How shall we explain the formation of stupendous rock-arches across deep ravines?
1936 H. Nicolson 28 Sept. (1966) 274 The precipices,..the rock-arches..roared back at us.
1992 Jan. 17/1 The park is a barren red sandstone landscape of desert scrub punctuated by rock arches, towering cliffs and precariously perched boulders.