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Green Sand Beach: Hawaii's Rare Olivine Wonderland on the Big Island

Green Sand Beach: Hawaii s Rare Olivine Wonderland on the Big Island

This iconic beach in Mahana Bay on Hawaii's Big Island isn't vividly green, but its rare olivine crystals create a mesmerizing spectacle. Olivine, the mineral behind the semiprecious peridot gem, forms in extreme heat from volcanic eruptions. Waves have eroded the towering littoral cone above, exposing these gem-like sands. Swim only on the rare calm days due to strong currents.

How to Reach Green Sand Beach

From Highway 11, drive about 10 miles south on South Point Road and take the left (east) fork to the old barracks. Park here (avoid leaving valuables) and hike the hot, dusty, windy 2.5-mile trail to Mahana Bay. Head south to the Kaulana boat ramp, then veer left along the coastline. Relentless winds make it feel longer—pack plenty of water.

Hiking is free and eco-friendly, but for a quicker option, hop in one of the weathered 4WD trucks at the barracks offering paid rides.

Regardless of arrival, scramble down the cliff to the beach, now drawing crowds despite the rugged access. Visit early, late, or on overcast days to avoid the rush.


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