Stone Jaw Beavers

Ability to dig vertically and horizontally to produce stone for aqueducts and a building structure similar to the Roman empire. Blending the wood and stone aesthetic would be impressive. This gives the 3D concept a whole new meaning. For custom buildings, they could have short and tall aquafers. They could have a rope and pully system to dig down and to lower and raise the beavers into the mine. Their digging speed and resource production could be tied to their education. The buildings could have a Roman Empire feel with the blending of wood and stone. Their length of working day could be tied to their happiness.