Large Wasp Nest

This wasp nest can be seen when standing on the terrazza, that covers the old swimming pool, and looking through the trees over the cliff. The large nest is difficult to photograph with the moving light and varying degree of vegetation during different times of the year. So far this is the best shot I have managed to get of this nest that is about four feet long. It has been there all the years we have lived here. I do wonder how old it is.