Inside the dark tunnel, a group of workers dressed in heavy protective clothing who looked like ordinary workers out of a science fiction game were brandishing picks and shovels, digging hard.
They used shovels to dig out the soil piece by piece and used picks when they encountered stones. Both the picks and shovels were equipped with semi-enchantment technology that saved them labor when digging the soil. They could only feel it was a little harder when they encountered stones, but they could break through eventually.
The excavated soil and gravel were shoveled into the two carts nearby, and once a cart was fully filled, someone would push the cart forward along the inclined tunnel, pushing it up to the treatment station near the exit, then return with an empty cart.
