If we are staying in Waikoloa, do we need to stay overnight near Volcano Nat. Park to see the volcano? Where should we stay for 1 night--2 adults, 3 kids? If we stay overnight, other things to see/do on that side? Esp. shore snorkeling. thanks, Elaine
There is plenty to see and do on that side of the island. Because it's less heavily touristed it's much less crowded and relaxing. When we're on that side of the island we always try to stay at least three nights.
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As for logistics from Waikoloa ... by far the best volcano viewing is at night if the is an exposed lava flow. If you do that, which I highly recommend, it's about a four-hour drive back to Waikoloa from the end of Charin of Craters Road. If the flow is going it couild be anywhere on the lava field out there - you should figure it's going to take you at least one-hour to get back to where you parked your car for the viewing (and 1-1/2 hours is more likely). And you'll want to be out there for at least one hour sunset.
IOW - you will likely return no earlier than 1 am. Hence my steadfast recommendation to get some accommodations on that side of the island.
But if you only book one night you spend a day driving down, and you need to get out to the lava field that night since you'll be driving back to Kona or Waikoloa the next night. So that means you arrive late in the afternoon to check in, and you don't have time to settle in because you need to get out to the park for lava viewing. Then you get back about 9 pm that night. In the morning you need to check out again. You now have just a few hours to spend in the park before it's time to head out.
Pretty rushed and cramped if you ask me. So I always say book at least two night on the south side of the Island. We book a minimum of three nights when we are on that side of the island so that we have time to do more than the volcano.
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Other activities on that side of the island. There are good hikes on that side of the island, including many inside the park. South Point is pretty neat. The whole Puna Coast is great, and there are many natural hot pools that are great for relaxing. There is the Hawaii Tropical Botanical Garden just north of Hilo on the Hamakua Coast. If you want to do an aerial view of the volcano, Hilo airport is the best location for doing a volcano flight.
Get the "Big Island Revealed" Wizard Publications book for lots of ideas.