Lairs Ihave seen sizes (most m3 to least):
120x120x240 (Last Stand, Mithril Anvil, Chiconis, Granite Hills, Drakul, Selen, Adan[Used to be Lost Machines, only one lair], Harton Valley, Aiya, Felathian Tunnel)
144x96x240 (Mia's Edge)
120x96x240 (Harro, South of Chiconis, Dikaina, Drakul, North of Selen, Summit, Drift Point)
145x72x240 (Snow Fall, Bristugo)
96x96x240 (Lerena, Grayling, Mahagra)
120x72x240 (Snow Fall)
96x72x240 (Drakul), 120x72x192 (Parsinia)
96x72x216 (between Kion and Parsinia)
72x72x240 (Mahagra)
Anyone find the 'Ancient City' or whatever is supposed to be too high for anyone but Ancients?