Seed: 8255457981459164808
Coordinates : -451,62,894
Large cave on the water, I use it as a pirate base with the pirate era add on. Lots of room inside, may be underselling it. If you follow the river there is also a small village on the water. There are 2 monster spawned right on the main level. Access to easy escape routes and easy access to large underground caves reaching the bottom of the world. First 7 photos are all sea level, right inside the main entrance.Final picture is a giant lava chamber directly below the cave at -14.
Sorry photos are not screenshots.
by boggsy17