Alien 2: On Earth (1980)

Plot

Cave explorers stumble upon a hidden underground cavern that houses a strange, sentient rock. Unbeknownst to them, this eerie environment is also the breeding ground for lethal, flesh-eating monsters determined to annihilate humanity. An unofficial and low-budget follow-up to the 1979 classic Alien, this sequel diverges significantly from its predecessor, focusing instead on the terrifying encounters faced by the unsuspecting adventurers as they battle for survival against a relentless, predatory force lurking within the shadows.