Expanded polystyrene blocks are easy to carve but it takes real skill to turn them into a rock grotto like the one shown here
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EPS Foam used to create realistic Rock Formation
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Privacy Wall Built with Expanded Polystyrene (EPS)
EPS Foam used to create realistic Rock Formation
Pumpkin Ridge Passive House Video #002: EPS Geofoam
Geofoam EPS-29 Geotechnical Lightweight Fill Blocks
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