Keep 'dem Shoggoth's rolling'

The enclosure is completed using a different technique to how I was previously planning.

On the image:

Left: The mostly-finished enclosure. It's subject to being altered in shape later to appear more rock-like, but for now it's close enough to the final shape to focus on more important things.

Right: The inside of Area A (the first large cave). The feeling of still-claustrophobic size and transition into a very claustrophobic tunnel B is coming along nicely. Working on adding the pit props now; getting into the detail work over basic formation.