A view of the main level of the cage. The ramp was made with a sheet of coroplast, a rubber shower mat that I cut to fit & two strips of pvc (No idea what they're really for, just bought them at random at the DIY store because I thought they'd come in handy for the ramp.) Everything is held together by cable ties.

The ramp itself is attached to the bottom grid on the upper level using hook screws. I cut out a 5 by 5 section of squares in the grid to create hole for the ramp. Hook screws make it easy for me to remove the ramp while cleaning the cage.

The rubber shower mat has proven to be really great for the ramp, as it provides the pigs with a good grip.

(For anyone interested, the hay rack is from ikea, under kitchen supplies.)