Another method for phosphorus removal is to use granular laterite.
Three laterite towers (partially collapsed) stand on the same platform.
It was built in sandstone and laterite in the 10th to 13th centuries.
For example, the red of many sand deserts comes from laterite minerals.
The red coloring is laterite soil that formed by floodplain deposits when the area was warm and humid.
As the name suggests, the top of this hillock is a laterite plain more than 365 ha in area.
Oriented toward the east, the hilltop temple is enclosed by a wall built of laterite blocks.
Wild creepers burst through laterite banks and spill across the flooded roads.
