During the ALOHA-93 campaign simultaneous observations of gravity wave structure in the OI(557.7 nm) nightglow emission were made using two all-sky CCD imagers; one located near the summit of Haleakala Crater, Maui and the other at Mauna Loa Observatory, Hawaii. On 19 October a set of bright, planar, monochromatic waves was imaged by both systems as it progressed rapidly over the Hawaiian Islands. Triangulation on these wave forms indicates a mean altitude of 95¿2 km in good agreement with previous rocket soundings at mid-latitudes. Two methods of triangulation were employed, both achieving similar results. ¿ American Geophysical Union 1995