The interior of the chapel room was formed out of 112 tree trunks, which were configured like a tent. In twenty-four working days, layer after layer of concrete, each layer 50 cm thick, was poured and rammed around the tent-like structure.
In the autumn of 2006, a special smouldering fire was kept burning for three weeks inside the log tent, after which time the tree trunks were dry and could easily be removed from the concrete shell.