There's a lot of options, the Hoover Damn, the Gran Canyon, Rock Climbing, ATVs, Dune Buggies and more.
We then got on buses of all things and were exposed to our camp at Polis which was at the North West corner of maui. https://wiki.team-Glisto.com/index.php?title=Gizli_Bulu%C5%9Fmalar_Ve_Ki%C5%9Fisel_Verilerin_Korunmas%C4%B1