Favorite this☆ Basalt Dyke and Arch on Lake Superior Description: Orange mount, dome-topped. Large rock formation of basalt with arched opening on Lake Superior. Printed on front of stereocard: "No. 268-Basalt Dyke and Arch, Gems of Lake Superior scenery, C.B. Brubaker, Marquette, Mich." Details Resource ID: EB02h100 Creator: Brubaker, C.B. Subject: Basalt--Superior, Lake Arches--Superior, Lake Rocks--Superior, Lake Photographers--Michigan--Marquette Stereographs Date Issued: Unknown year Format: 1 photoprint on stereocard ; 3.5 x 7 in. Member of: Burton Historical Collection Filing Location: M/Rocks Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.