Shalidor would construct the maze much later. This makes me wonder if Shalidor's research still exists, possibly via oral record. I'm thinking the knight order fighting the Mages Guild in Arena keeps his research alive, if anyone does. I havn't played Arena, so if this isn't the case, please say so. Its also obvious Arena's quest to find Labyrinthian didn't happen quite the way we remember, that is for one detail, the Mages Guild did not interpret an elder scroll to find the location of the maze. It was likely some stolen ledgend of the knights they pried from a captive by use of mysticism. The Nordic MG is a lot more honest with itself, it seems... I guess only time will answer my question, but its something to discuss, anyway.