One of the treasure maps is called a scroll (though the one from the dwarven halls), so maybe you still have it at your base, but overlooked it because it was not named the same as the others?

Silver Armour and Treasure Maps

You can use the 'lost items' procedure (link above) to replace the missing map, if you can not find it. If you are familiar with moving files around in Windows Explorer (and go through the lost items procedure carefully) it is a relatively easy fix.


If you have both teleporters with you (ignoring the instructions to leave one on the ground and take one with you) you can use them to get out of the easter egg area over the mountain, so at least in principle you should be able to get in that way as well. You'll have to play around with where your character stands and where you try to drop a teleporter stone.

a way out, if you're Stuck in the Easter Egg Area (broken links are fixed in a reply)