Impossible Lands section 172–173 (as Synostosis, no "Academy"; "Arch of Bones" altname, origins as Bonewall council, necromancy theory, Blood Lord Sittak as leader, practical institution, maintenance of Yled, all buildings made of bone, research toward growing dead bones from shards); mention 164; map location in Yled 172; proximity to Echoing Pillars 173 -Oznogon (talk) 20:15, 5 March 2025 (UTC)