Q. On a talk show I heard Leonard Nimoy say he was on his way to Ecuador to explore caves. What's that all about? -- Arine S., Union City, N. J.
A. "Mr. Spock" digs caves. Explains, "I want to see certain drawings on the walls -- of astronauts wearing bubble-type headgear and padded suits. Also clearings indicating aircraft landings, form a time when there were no airplanes."
Presumably this had something to do with his show In Search Of... (1976 to 1982) which focused on Fortean subjects like UFOs, ancient astronauts, the Bermuda Triangle, ghosts, Atlantis, etc.