"What would stop a human/elf from capturing an orc, and simply forcing/torturing/magically probing him into spilling the secrets of the Troll Leash?"
Got to leave the PCs something to do, but this would make a great RP scene.
Murometz's aspiring mage stands along the wall at the council of mages as they discuss methods for preparing the Regent's Army for battle with the Duke. The job of the pages is three fold learn from example, keep the goblets full and block the drafts. Murometz's young page shivers, rattling the metal tray and metal pitcher in his hands. The noise was louder than he thought and all the mages turn to look at him.
"DO YOU HAVE SOMETHING TO ADD, CAUSE WE ARE TRYING TO SAVE YOUR KINGDOM, SO PLEASE IF YOU ARE GOING TO MAKE NOISE TACK A USEFUL IDEA ON THE END OF IT" snaps Lord Hokum Rokum-demon bound mage of east.
"Why....why....don't you just ask the Orcs how the leash works......."
Hokum stands and draws his arms as if to cast, but stops and a quizzical look crosses his face. The Elven delegation looks at each other sideways and the Arch Mage opens his mouth as if to speak, but instead just nods his head and says nothing. Hokum sits down and says "Very good, thank you" Go to Comment
A thoroughly enjoyable read. Many of these holidays can be turned into mini quests or adventures for travellers to halfling lands, so the list is also very useable. If you could fix your numbered links ( type the full name of the submission between square brackets eg 30 Exotic Birds ), that would help with the flow.
As an external examination of these mysterious structures, this is excellent. Teds point holds as well - though it is possible to fill in the details oneself, it is always nice to have option of a ready made examination.
As for the fabrication of molten stone structures, magic would almost assuredly be needed. Getting enough fuel to melt non-trivial volumes of stone would be ruinously expensive.