9 Best Sights in Kau, Big Island

A must-do on a south–southeast–bound trip to the volcano, this easily accessible black-sand beach is backed by low dunes, brackish ponds, and tall coco palms. The shoreline is jagged, reefed, and rocky. Most days, large groups of sea turtles nap on the sand—a stunning sight. Resist the urge to get too close or disturb them; they're protected by federal and state law, and fines for harassment can be hefty. Removing black sand is also prohibited. Extremely strong rip currents prevail, so only experienced ocean swimmers should consider getting in the water here. A popular stop for locals and tour buses alike, this beach park can get busy, especially on weekends (the north parking lot is usually quieter). Shade from palm trees provides an escape from the sun, and at the northern end of the beach, near the boat ramp, lie the ruins of Kaneeleele Heiau, an old Hawaiian temple. The area was a sugar port until the 1946 tsunami destroyed the buildings. Amenities: parking (no fee); showers; toilets. Best for: walking.

Located off Highway 11 at mile marker 70.5, the Kahuku section of the park takes visitors over many trails through ancient lava flows and native forests. Ecological wonders abound in this beautiful but isolated region that encompasses more than 116,000 acres. Guided hikes with knowledgeable rangers are a regularly scheduled highlight.

It's thought that the first Polynesians came ashore at this southernmost point of land in the United States, also a National Historic Landmark, and today people travel here for the views and access to Green Sand Beach. Old canoe-mooring holes, still visible, were carved through the rocks, possibly by settlers from Tahiti as early as AD 750. To get here, drive 12 miles down the turnoff road, past rows of giant electricity-producing windmills powered by the nearly constant winds sweeping across this coastal plain. Bear left when the road forks, and park in the lot at the end. Walk past the boat hoists toward the little lighthouse. South Point is just past the lighthouse at the southernmost cliff. You may see brave locals jumping off the cliffs and then climbing up rusty old ladders, but swimming here is not recommended. Don't leave anything of value in your car. The area is isolated and without services. Green Sand Beach is a 40-minute hike down the coast.

People take this short hike, 1.6 miles round-trip, to see faded human footprints, fossilized in hardened volcanic ash. Easy.

This lowland forest reserve spreads across several relatively recent lava flows, and a semirugged trail follows a 2-mile loop past a pit crater, winding around interesting trees such as hau and kukui (candlenut). You can wander through the well-maintained arboretum, snap photos of the eerie forest, and let the kids scramble around trees so large they can't get their arms around them. The pathways can get muddy and rough, so bring appropriate shoes if you plan to hike. Large populations of the Hawaiian hoary bat inhabit the area, which, in totality, encompasses 25,000 acres of forest reserve. Restrooms and picnic areas are available.

About 16 miles east of Naalehu, beyond Punaluu Beach Park, Highway 11 passes directly by this sleepy little town, once a booming sugar plantation company town but still inhabited by retired cane workers and their descendants. You'll miss it if you blink. There is a Longs Pharmacy, a gas station, and a small supermarket, but not much else in terms of conveniences. Beyond the town, past a wide, paved cane road, is Wood Valley, known for a Buddhist temple set amid a peaceful area.

Those tired of the same old white- or black-sand beach can lace up good hiking shoes or sneakers to get to this olive-green crescent, one of the most unusual beaches on the island. It lies at the base of Puu O Mahana, at Mahana Bay, where a cinder cone formed during an early eruption of Mauna Loa. The greenish tint is caused by an accumulation of olivine crystals that form in volcanic eruptions. The dry, barren landscape is totally surreal but stunning, as aquamarine waters lap on green sand against reddish cliffs. Drive down to South Point; at the end of the 12-mile paved road, take the road to the left and park at the end. To reach the beach, follow the 2¼-mile coastal trail, which ends in a steep and dangerous descent down the cliffside on an unimproved trail. The hike takes about two hours each way and can get hot and windy, so bring lots of drinking water. Four-wheel-drive vehicles are no longer permitted on the trail. The surf is often rough and swimming can be hazardous due to strong currents, so caution is advised. Amenities: none. Best for: solitude; walking.

Behind the remote town of Pahala, this serene and beautiful Tibetan Buddhist temple, established in 1973, has hosted more than 50 well-known lamas, including the Dalai Lama on two occasions. Known as Nechung Dorje Drayang Ling, or "Immutable Island of Melodious Sound," this peaceful place welcomes all creeds. You can visit and meditate, leave an offering, walk the lush gardens shared by strutting peacocks, browse the gift shop, or stay in the temple's guesthouse, available for peaceful, nondenominational retreats taught by masters.

Behind the remote town of Pahala, this serene and beautiful Tibetan Buddhist temple, established in 1973, has hosted more than 50 well-known lamas, including the Dalai Lama on two occasions. Known as Nechung Dorje Drayang Ling (Immutable Island of Melodious Sound), this peaceful place welcomes all creeds. You can visit and meditate, leave an offering, walk the lush gardens shared by strutting peacocks, browse the gift shop, or stay in the temple's guesthouse.