These ‘Grubbenbomen’ represent huge beech trees with exposed roots in century old hollow ways typical of our countryside. A ‘grub’ is a dry valley which cuts deep into a plateau and is formed by draining rainwater. Quite often a hollow way is situated in it with trees alongside its borders. The whole ecosystem of a living tree is visible with the roots transporting the water up into the branches and leafs and reversely with the nutrients necessary for growth, created by photosynthesis in the leafs, transported back into the roots.
This a complete and very cyclus of (tree) life which shows an internal interdependence which I find very inspiring. In a way roots could also be seen as the below ground branches and branches as the above ground roots.