No more hills

I love a bit of geoengineering. Dad likes it too, so my childhood car trips were full of detail about the rock cuttings we drove past.

Here is a lame pic of a mind- boggling cutting, just one of a long series. This freeway outside Sydney is cut out of mountains. The rubble from each massive cutting must have been piled into the next valley so the road is horizontal.

The cutting people cleverly left a ridge of rock as a barrier between the two sides of freeway, and that's what I was trying to photograph.