Makua Cave (Natural Attraction, Leeward)
A quick stop on the way to or from Ka’ena Point you can find the entrance to this cave at Farrington Highway mile marker 17. There is a dirt parking lot directly across the street on the ocean side. I was actively searching for it on the way there but it eluded me. On the way back I saw it out of the corner of my eye and we u-turned back to check it out. 
The cave is pretty big and you can walk in a descent distance before you have to start crawling. I wasn’t doing anything that wild on this day, but you could if spelunking is your game. 
No one was there when we entered but there was some trash and bottles on the ground. Definitely an eerie feeling in here, but I guess that’s how most dark deserted caves feel. 
No bats or any visible wildlife, just a neat natural creation that I probably spent less than 10 minutes at, but was happy to have found!