Building wofati into a saw dust pile?

Our land is basically clay with a small bit of soil on top. The water table is only 10 feet underground. There is a massive sawdust pile that is at least 30 years old that is partially decomposed. The highest point is about 20 - 30 feet off the ground. I've just finished reading Mike Oehler's book and I am leaning towards the shed roof flat land design. Could anyone make a suggestion as to whether building into this saw dust pile would work and if it would be advisable? Thank you so much for your time.

This is what Id like to build:

I think it will work. the saw dust will eventually become soil.

Until then, the air between it should be good insulation.

Cheers!

Sweet thank you

You can do it if I get to call it "the back to Eden woofati"!!! Hahaha

Thanks...I can see the pic now...Impressive

DWA