We’ve been to Hawaii…in fact we’ve been twice. Once to the Big Island and once to Oahu.
When we were on the Big Island we went looking for a Green Sand Beach. We never found it but I finally met someone who did.
She said they got there by off roading so we must have been on the right track. We drove as far as we could in the rental and then I (the driver) chickened out as the road disappeared and got all rocky.
I recently found this guide book description of the road to the beach in question.
Keep in mind, driving to the actual beach is out for all but the most experienced off road drivers. Instead, most opt for a 2 1/2 mile hike each way along the wind swept and hot dusty deep rutted jeep roads.
Too bad. Would have loved to find that!
I wonder if there is a green sand beach on Maui?