i saw the movie in mid '80s as a kid and things that i remember are limited:
it was kinda indiana jones rip off movie, set in dark south american jungles (probably a hunt for lost aztec treasures?)
deep in jungle, movie characters became victims of some creatures that looks like giant bats- at least they have wings like bats
and they surround their victims with their wings and devour them (only bones left)
any info?