First I enjoy the beautiful demos as-is, and second I go exploring. I deleted a section of wall, jumped out onto the SM_Cave_Rock_Large8, and promptly fell to my death in the water below the rocks!
I added a cube and made a platform, and I can walk on that just fine. I have been comparing the cave rock properties to the cube properties, and I just don’t see anything that will enable collision so I can walk on the rocks.
How does this work?