Tombs of the Blind Dead(1972)

Makes "Night of the Living Dead" Look Like a Kids' Pajama Party!

In 13th century Berzano, a legion of knights known as the Templar were executed for conducting black magic rituals and committing human sacrifices in a quest for eternal life. 700 years later, they rise from the dead and attack a group of vacationing college students who visit the remains of their abandoned monastery.