Final answer:
The sacred monolith within Chavin de Huantar is called El Lanzón, a sculpture with human and animal features central to this ancient religious site.
Step-by-step explanation:
The name of the carved monolith that dominates the sacred space within Chavin de Huantar is El Lanzón. Deep within the temple's interior network of tunnels and mazes lies this significant sculpture, which uniquely blends both human and animal features, such as flared nostrils, fangs, and protruding claws embodying its deity-like status. The Chavin de Huantar site, elevated above the jungle and below the mountaintops, served as a formidable religious and political center beginning around 900 BCE, with El Lanzón arguably its most awe-inspiring feature meant to impress both residents and visitors.