Since Salo is Brendan Frasier fan club, everyone should know about Doug McClure, who is older and better version of Brendan Frasier. The two greatest classics of his oeuvre are "The Land That Time Forgot" (possibly greatest schlock film ever made) and "At the Earth's Core" -both are based on Edgar Rice Burroughs stories. Both are presently on youtube.
"The Land That Time Forgot" has it all; German WW-1 submarine crew, limey fisticuffs, cavemen, dinosaurs, lost continents, explosions, accelerated evolution.
YouTube: https://www.youtube.com/embed/rWZGpgMrBU8
"At the Earth's Core" has Peter Cushing, Doug McClure and this chick from bad British movies who probably permanently warped my developing libido with her amazing gazongers. They drill to the center of the earth using a Victorian drilling machine and discover dinosaurs, cavemen, cannibalistic alien religious cults and actual hellfire.
YouTube: https://www.youtube.com/embed/pGuupTk8HkU
I have a carefully curated collection of 60s-70s British adventure schlock (mostly made by Hammer and Amicus films); possibly worth another thread. All of it is mindless entertainment, but vastly better as such than, say, recent Star Wars movies. In fact, original Star Wars was heavily influenced by these movies which is why Cushing and Christipher Lee were in Star Wars movies. All of them are imaginative, have interesting (if one dimensional) characters, terrible special effects (a positive for me), a clearly defined sense of good and evil, and zero strong and empowered career women. Low art is often good. Will make a thread if anyone is interested.