The part over the river is one long corridor and was used as an indoor walk area. Here's a photo of the inside from a few years ago.
An interesting aspect of this building is that it is obviously unfinished, and was intended to reach the other bank. This can be seen by looking at the ends of the walls, where the mouldings break of half finished.
On our walk back Bill complained that his legs were tired and we stopped for a short rest.
Once everyone was back at camp we had a quick lunch then off again.Until tomorrow