Four hours drive from La Paz towards Chile you have the Sajama National Park (4100m), with the second highest volcano in the world; Sajama (6542m), and as a side-effect thereof; hot springs.
We left at 7am and even so, there was quite a lot of traffic coming in and out of La Paz and El Alto. People here drive like they have 9 lives, yet they don’t. So you gotta be careful and if you don’t use your horn like a frantic, people wont think you are there. But once we turned south toward the Chilean border, traffic disappeared almost totally.
