We recently had a JCB on site to clear the line for the new fencing. The 8 tonne vehicle had to constantly dig himself out of the soft soft clay. As part of our tests into site drainage, we had him dig a 2 metre deep hole. This revealed the most varied range of coloured clays I've ever seen in a soil profile. It has given us lots of ideas about our clay plaster for the earthship plus activities we can do with schools and adult groups. It's a pity we have to fill in the hole again after the tests.