Press the left mouse button and drag to rotate the surfaces.
Press the right mouse button and drag or use the mouse wheel to zoom in and out.
Press the middle mouse button and drag to move the surfaces around.
Use the menu on the right to switch surfaces on or off. Double click on a surface name to see further controls such as transparency.
The ground surface can also be moved up and down and is shown slightly above its true position to start with. The ground surface data here is taken from the openly available OS DTM data which is not exactly consistent with the DTM used for geological modelling which we are not able to serve publically.
Click on a surface directy to identify it and get it's elevation at that point.
Vertical exaggeration: x10
Explode units: 0