Cayman Trough - Geology, 739 Description: media: Video - 3/4" RtoR - 2 reels, VHS videocasette, dub from RtoR - 1 tape, Film - Stills 35mm B/W 4 reels, audio casette tapes - 2 tapesnotes: Cayman Trough - Geologycruise/dive: 739