Earth mound over culvertWith a height of approximately one metre, the earth mound has a ridge that follows a curved line similar in shape to that of a horseshoe.
Part of the mound's curviture is picked out by coloured dots in the first image.
The culvert, positioned in the middle of the earth mound's belly, is marked by an orange arrow in the second photograph.
Whilst the earth mound was designed to act as a 'brake' on water flow by trapping large volumes of water in its rounded hollow, the culvert allowed water to escape from the site in a controlled way.
This water flow control system is described graphically by the last image on this page. It is not made to scale.