Cavern 27

 Cavern 27

This cavern is 470 feet, and is a large chamber at the very top and tapering down a few passages down until the end goes out in a single passage. There is some sectioning in the middle, with passages in and out and around, but overall this cave is straightforward.

In the edit I added some kinda animal den, or a warrens for a less civilized species or group of animals.

Up to you to figure out a good fit. I also added one small figure for scale.