To the very depth of earth, light !

What a project ! when you think you have seen everything, a remarquable idea.

Digging deep, and I am sure quarrying at the same time, into some granit stone ! The light coming at the other side is really majestic. I am sure we could use some of the natural stone extracted form some steps or treads for all our natural stone !

http://www.vilalta.cat/vilalta-commissioned-to-design-a-granite-excavated-chapel-in-raleigh-nc-united-states/