"Tar Pit" is the first episode of the second season of the 1975 American television series Land of the Lost. Written by Margaret Armen and directed by Gordon Wiles, it first aired in the United States on September 6, 1975 on NBC.

A tar pit, or more accurately known as an asphalt pit or asphalt lake, is a type of petroleum seep where subterranean bitumen leaks to the surface, creating a large area of natural asphalt. This happens because, after the material reaches the surface, its lighter components vaporize, leaving only the thick asphalt.