license = CC-BY-SA 4.0. Adaptation of "Karsthafen" (https://forum.minetest.net/viewtopic.php?f=12&t=6642), by solars and Peters, from the Minetest forums (forum.minetest.net).
others = This map was taken from Karsthafen town region in the original Karsthafen map, created by solars and Peters and converted into a CTF map by -sniper-.