Phantom Empire (1988)
“ When a man-eating cave creature appears with a fortune in uncut diamonds around his neck, Dr Chambers' daughter Denae hires adventurers C and C Salvage to find the underground source of the gems.”
https://www.imdb.com/title/tt0091752/?ref_=ext_shr_lnk
Jeffrey Combs? Can't wait!
Yep. Never get tired of watching him.
Oh man, he's so young. And rocking that Marty McFly look.
Looking forward to the sequel, Phantom Empire II :The Land Where Time Said Fuck It