What does Thranduils underground palace home look like?
No one can do this better than Tolkien. Here are his descriptions of the Elfking’s realm, both inside and out, from ‘The Hobbit’. A passage from the chapter titled: “Of Flies and Spiders” “In a great cave some miles within the edge of Mirkwood on its eastern side there lived at this time their greatest king. Before his huge doors of stone a river ran out of the heights of the forest and flowed on and out into the marshes at the feet of the high wooded lands. This great cave, from which countless smaller ones opened out on every side, wound far underground and had many passages and wide halls; but it was lighter and more wholesome than any goblin-dwelling, and neither so deep nor so dangerous. In fact the subjects of the king mostly lived and hunted in the open woods, and had houses or huts on the ground and in the branches. The beeches were their favorite trees. The king’s cave was his palace, and the strong place of his treasure, and the fortress of his people against their enemies. I
