Dee Wright Observatory
This is an amazing observatory in the pass with 360 degree views over the lava fields. The structure is made up of lava rocks and there is a compass at the top of it the identifies all the surrounding peaks. There are also interpretive signs about the first travelers over the pass and the hard times they encountered. You'll also learn a lot about the geology of the area. Make sure you make it inside to look through the holes towards the peaks as well.