Kiluea Iki trail, drive to see the ocean, Hike lava tubes. Grab dinner on the Crater Rim resturant. Also - active flows are currently happening along Devastation Trail.
You can hike down - but the hike is not for the inexperienced, and don't forget plenty of water. Better yet, find a group/tour to take you out there, there are a million of them and they all take you to the same places :D
Ariel LOVES this place! It was her favorite treat when she lived on the Big Island in 2013! The best are the portuguese sweetbreads! (doughnuts)
You need a 4wd vehicle for this trip. It’s a BIG hike.
White Sand beach! Hawaii State Park (free!)
Enjoy the lookout or adventure further with a hike! Hike down, but be prepared. It's a long hike and you have to come back up!
Take a tour and enjoy this awesome, local candy company! The chocolate covered macadamia nuts are a classic favorite!