The village of Mondedr is a secretive place out of necessity, as it is a den of thieves and assassins. Thus the only way for you to get to it is to find one of these scrolls and present it to the mystery man who can be found in New Attnam.
You can also read it for a permanent +2 Intelligence increase. ("This sheet of paper reveals many interesting facts about Mondedr. After finishing reading the pass burns up")