The walls of this house use only natural materials
found close to the building site. Clay, straw, sand, pumice and
colihue (a frost-tolerant bamboo) were used. The outer walls are
made from 1 part clay, 1 part pumice, 1 part wood chips and 1 part
straw. The internal walls are adobe bricks (clay, sand & straw).
The structural columns of the building are 8m (26ft) tall cypress
roundwood timbers that had fallen naturally in the nearby national park
woodlands.
You can see more of the building in
Ezequiel & Violeta blog (in Spanish).
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