Nakalele Blowhole Heart Rock
Right next to a powerful blowhole, this natural, heart-shaped window in the lava rock wall provides a glimpse of the ocean on the other side. This cute Instagrammable shape belies the danger of the blowhole. Heed all the warning signs and don't get too close to the blowhole which can shoot a jet of water 100 feet into the air. When it goes back down it creates a vacuum of air which can suck unassuming bystanders right in. Kind of scary so keep your distance!