In November 1976, the U.S. Geological Survey (USGS) in conjunction with the Hawaii Institute of Geophysics (HIG) of the University of Hawaii established a seismic refraction line perpendicular to the southeast coast of Hawaii (Fig. 1). The purpose of the experiment was to define the crustal structure of the southeast coast and its relationship to the tectonics of Kilauea volcano. This open-file report describes the experiment and presents the data without interpretation.