Haha, it's in the Headhunter Country. I think you get to it by going to the most right side of Zora Pass...then once you get to it, go the only way you can until you reach a bridge, go north until you can't go any further, go right, then continue on that path.
You mean Sloven Caverns? 'Cause I can't find said room...but I also am not sure how to open the shutter in the ex-boss room.
EDIT: Hey Freedom, I've imported your awesome mountains into the Adventure Tileset, but I can't find the right palette/cset. Which ones do they use?
The best way to get the palettes now is to take screen shots in each area while you play the game
go into zquest, and your Adventure Tileset, and go to Graphics>palettes and select a new one and name it Mtn Palettes, or something, and then grab from your screen shots.
I'm pretty sure that they are normally cset 3 since water is with them and my ripples were set to cset 3, but once you understand the palette order you will see them right off.
very easy to do.