Tar

Tar is a movie starring Timothy Bottoms, Graham Greene, and Aaron Wolf. A mysterious creature rises from the depths of the La Brea Tar Pits in Los Angeles to wreak the city.
In the murky depths of Los Angeles' world-famous La Brea Tar Pits there lies an ancient secret - a creature that, awakened by underground construction, turns a night of somber packing for Barry Greenwood and his co-workers into a desperate fight for survival.