The rocks in Maui are amazing. The beaches have either black sand (from the Ocean Island Basalt that makes up most of the Island), or white sand, but then you can travel to Haleakala, the major volcano of Maui. This enormous caldera has many cinder cones in it, and the red colour is incredible!
As a result, the rocks in the area are very different to those you’d find in Ka’anapali, Lahaina, Kihei, or Wailea.
There is still definitely evidence of volcanism that is characteristically basalt. On the bottom-right corner of the following picture, there is what appears to be basalt columns.
