BEDROCK STOPS THE SINKING
Once the tower is vertical, the last of the 150 piles will be installed so that the building will not begin to lean the opposite way. The tower can sink no more as the piles cannot go through the rock.
Once the tower is vertical, the last of the 150 piles will be installed so that the building will not begin to lean the opposite way. The tower can sink no more as the piles cannot go through the rock.