We didn't want to leave the Big Island without visiting the Summit. We took a tour up, better than driving yourself ( if you do make sure you have 4 wheel drive) I would reccomend going with a tour. It was so beautiful! We got some outstanding pictures once we made it to the very top (13,000 feet). The sunset was so breathtaking from the view so high! Dress very very warm! Its about 30 degrees up there and feels even colder. Put lots of layers on. The air is very thin so make sure you take your time walking around up there. You may get out of breath quite easily. Star gazing was also incredible. They have a small gift shop at the visitors center . Some really neat things to look at there. You might want to bring a flash light if you go at night. Enjoy! You should go!!!