Fig. 1From: Design and operation of a 1500-m laser strainmeter installed at an underground site in Kamioka, JapanLocation of the 1500-m laser strainmeter and other facilities at the Kamioka underground site. The Atotsugawa fault is located approximately 0.5 km from the strainmeter and is almost parallel. This figure is modified from a map released by the Geospatial Information Authority of Japan (GSI)Back to article page