I have found old interior pictures of the Timpanogos Ward from a ward history book. The original chapel used to look like this for much of the twentieth century:
There was a beautiful painting of the Susquehanna River at the front of the chapel, but it was covered up by a renovation in 1976.
The room now serves as a classroom, and a bigger chapel has been built onto another portion of the building.
It appears that in the renovation, the original room was cut off to form a hallway. It's not very deep; only about five pews fit in the middle section.
It's still a beautiful room, though.