Sheet materials made from recycled materials, cnc routered to create grooves to bond the materials into, bonded together, tunnel supplied as a separate piece which slides into cut-out for it on front of the main living area.
Rot, insect and fungi Proof, outlasts wooden versions by decades without any of the maintenance
Hedgehog friendly, easy to clean and keep free of insects, detachable roof for cleaning.
Will last for many many years without any treatment or maintenance
Helps endangered native animals to survive and populations to recover.