During the conflicts between Beszu and Almoho about the Tower of Antharax, when Beszu had just gained control over the tower, a small troupe was send out to transport items and artifacts from the tower back to the city. They had to make a small detour, since there was heavy rain and the roads were nearly flooded. When they reached the foothills of the Noppa Hills, they where ambushed by a regiment of the Almoho's army and all the treasures got stolen.
It is said and believed to be a rogue regiment, since Almoho's officials always denied, that the regiment had any orders of this sort and also the regiment, never came back. Normally, one would be a bit suspicious of it's enemy, but in all other cases Almoho took public pride in their actions against Beszu.
Since it is believed, that these artifacts were some of the more powerful ones and the only ones that got extracted from the tower during the whole conflict, this incident is also known as the heist of the century. Shortly after, they lost control over the Tower again and never got it back during the time of the conflicts. Only afterwards, when the next generation agreed to end the fighting and started collaborating on the discovery of the tower, they entered the tower again and all treasures were shared between both cities.