Columns as used for Greek temples are symbolic trees and mark place in nature that could be devoted to some god. This is also the case for this sculpture because this is a place with some very old trees and also a place where people lived in the Stone Age. In more recent years a poet named Lucas Trip lived here in the old house called Vennebroek. That is the reason that feathers have been placed on the two broken columns. They also symbolise the feathers of a wing and the reach that ideas can have in poetry. The word Federa is the ancient Middle Dutch word for feather.