I'm not entirely sure what you are trying to do, and there is no way to get a lit cave path castle, but you could use lit on any existing castle.
Here is an example with a troll encampment with troll keep and an orcish castle with an encampment keep, the caverns use dirt floors.
Here is an example with a troll encampment with troll keep and an orcish castle with an encampment keep, the caverns use dirt floors.
Statistics: Posted by Duke_Anax — Yesterday, 8:04 pm