Written by David Gerrold and directed by Dennis Steinmetz, it first aired in the United States on September 14, 1974 on NBC.
Using Morse code by reflecting sunlight from a mirror worn on a necklace, Will messages their discovery to Rick, who agrees to meet with them in the jungle.
Cha-Ka finds Rick and quickly leads him to the ruins, where they are intimidated by an allosaur (dubbed earlier "Big Alice" by Holly).
Rick and Cha-Ka enter the ruins and fend off the Sleestak with a torch, which accidentally falls into the pit and sets the creature within on fire.
[1] Film historian Hal Erickson praised "The Sleestak God" for keeping Cha-Ka's leg broken from the previous episode, saying "That's what we mean by good continuity.