Board Thread:Questions and Answers/@comment-4977079-20150113093614/@comment-25775410-20150114102609

I've briefly read through some of the books that I thought might have the details. In the Shadowgate, there's the Shadowgate village and an area that the village is named after. The Masked Ones stayed in the village and the Masked One was in a castle in an area that was deeper into the mountains past the village. It doesn't say anything about prisoners passing through the Shadowgate.

However in The Shadowslands, Lief mentions that Doom escaped from the Shadow Arena and immediately went straight through the hills into Deltora and was pursued up Dread Mountain. So the Arena had to be near the border and western slopes of Dread Mountain. Jasmine reasoned that the Factory would be nearby because nobody would take the lethal jars further than necessary and they were carried through a pass that lead directly from Dread Mountain into the Shadowlands. So I assume that pass where they took the jars of poison to make the blisters would be the same pass that they took the prisoners through.

Hopefully this info helps? I also looked through the Tales of Deltora because that mentioned prisoners being taken into the Shadowlands but its very vague XD