That was for sure a Crumbling Location. I had a couple of goes at level one but never made it out - 100 orbs seems like a steep price even if you trade in some for more spawns. Had fun though gambling on walking over slightly broken spots and hoping I'd be able to get back.
Might be a good idea to zoom the camera back a bit because sometimes I felt I was a little too close to the edge of the screen and couldn't really see where I was going.