Fig. 1From: InSAR analysis for detecting the route of hydrothermal fluid to the surface during the 2015 phreatic eruption of Hakone Volcano, JapanLocation maps of Hakone Volcano. a The map shows the area around Hakone Volcano. The color map was made from the 50-m mesh height data released by the Geospatial Information Authority of Japan (GSI) and the 500-m mesh depth data of the Hydrographic and Oceanographic Department of the Japan Coast Guard. HV: Hakone Volcano. b The map shows the area of focus, which is the north side of the central cone of Hakone Volcano. Twenty-five-meter contour lines extracted from 10-m mesh height data released by the GSIBack to article page