The dwarves

With the riverbed dry and cleared, The clone took a moment to scan the landscape before turning his attention to his First Legion. "Begin," he commanded with a nod, his voice echoing across the empty riverbed.

The soldiers sprang into action. The area under the soon-to-be fort was a chaotic blend of sand, small pebbles, and larger rocks. Clearing this uneven terrain was their first task. With careful precision, they began to shift the rocks and level the ground.

The bigger rocks were moved aside for potential use later, while the smaller ones were ground into a more manageable size. In a matter of a few hours, the riverbed had been transformed into a flat and even construction site.

Once the ground was prepared, the first pieces of the fort started to take form. 

Reinforced concrete bricks were unloaded from backpacks, each piece meticulously crafted to fit seamlessly into the others.