Hard-packed dirt floor （TATAKI 三和土）

Tataki is hard-packed dirt floor made of red soil, gravel,hydrated lime and bittern.
This technique was useful for solidify soil without cement.

It have used be used for a part of Japanese firmer's house since Edo era (1603-1868).
The space named "Doma"."Doma" was used as semi outdoor space in where firmer worked at night or in rainy day.

Nowadays, Tataki is improved tougher by using cement, and used for various space.

*Aomori museum of art