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How to build your own underground home construction plans energy efficient save money secur

How to build your own underground home construction plans energy efficient save money secur

Small ECO Houses - Living Green in Style, by Cristina Paredes Benitez and Àlex Sánchez Vidiella

Small ECO Houses - Living Green in Style, by Cristina Paredes Benitez and Àlex Sánchez Vidiella

I just want to explore... how far back into the hill does it go?  Is there a lower level?  What kinds of creatures live here?

I just want to explore... how far back into the hill does it go? Is there a lower level? What kinds of creatures live here?

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