Place it at the end of a quiet build, after an Enemy Spotted cue warns the audience and just before the reveal lands. Follow it with a FNAF Jumpscare Scream once the creature is fully visible, so the ambush escalates instead of peaking too early.
About this sound
This clip is a short monster-emergence effect built around the moment an ankheg breaks through the earth, with cracking ground and a heavy creature surfacing underneath it. It feels sudden and threatening, like an ambush arriving with no warning and no time to react. It works best as a jolt, turning a quiet scene into an immediate danger.