The comfy loo seat. There are bolt holes drilled into the rocks to secure the frame.
The necessaries are kept in a daren drum with a string handle at the entrance to the bivvy. If it's not there, then it's in use. The daren drum contains:
Every couple of years the seat gets cracked or broken and has to be replaced. We buy a new one in the lagerstore in Altaussee.
The beams of wood and the carefully-measured lengths of studding and nuts required to make it level are all kept in our usual winter store. Two standard 13mm spanners are required to assemble it.