A 40-degree slope is a little hard to imagine. So a few pictures should help.

Click on the photo above for a closer look at the building site, framed by the mountain above and behind, as seen from Olinda Grove to the east

The upper part of the site with hay bales in place to stop rocks from rolling out of control during excavation

Zoomed out to appreciate the slope a bit more

How did that excavator get down there? There would be many ways but this one was carefully driven over the edge, creating the upper path as it went!

The block is 989 square metres, just under ¼ of an acre.