The Black Tower is the headquarters of the Asha'man, the organization of male channelers started by Rand al'Thor and trained by Mazrim Taim. It originated as a converted farmhouse located less than two leagues south of Caemlyn.
The Black Tower's name derived from Asha'man themselves, who began calling it such in contrast to the White Tower of Tar Valon, where female channelers are trained. Taim has his students working on an enclosing wall nearly four square miles around the Black Tower, and has built a large manor house where he himself lives, along with most of the full Asha'man. Most of the Soldiers live in barracks, though the Dedicated have started constructing small houses for themselves.
Since Rand surrendered control of Andor, it has been regularly visited by soldiers sent by Elayne Trakand to enforce Andoran law, though this is largely seen as merely a token gesture due to the large size of the Black Tower compound.
Leading up to the Last Battle, two factions emerge within the Black Tower, one led by Mazrim Taim, and the other by Logain Ablar. Taim's faction is larger and appears to be on the Shadow's side. Those on Logain's side have become worried at Logain's continued disappearance and certain worrying developments, whereby some channelers have been changed in some way so it is no longer them there. The details of this are unknown, but are worrying for the inevitable confrontation between Rand and Taim.
Cache Coordinates: N 38 deg 3A.9B0, W 121 deg C6.D6E
Please reference the waypoints for the locations of each letter. Below are the clues.
A - Stefanko, Michael P - 3rd number in the year he died (example, the 7 in 1871).
B - John T. Obenshain - Last number in the year he was born.
C - Wreyford - First number of the day of the month he died (example, the 2 in 23).
D - Layton - Second number of the day of the month he was born.
E - Watrous - 4th number in the year that he died.