Hand of the Amahn'rukane
A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
The hand of the Amahn'rukane is an enormous statue, "like a sword stabbing the ground", near the Jehannah Road. Perrin is camped there when the Aes Sedai bring Tam to talk to Rand. As far as scholars know, it was never finished.
(Reference: The Gathering Storm, Chapter 44)