Bolivia: Walipinis, los invernaderos bajo tierra

Spanish trade-press summary of Bolivian Altiplano walipinis attributing invention to Swiss cooperator Peter Iselli, rescue by Héctor Vélez/Gemio eco-farm, Aymara gloss "muy bueno/muy bien," and labor-heavy cost caveats. States Aymara name means "muy bueno" or "muy bien". Attributes design to Swiss cooperator Peter Iselli about 25 years before the article; abandoned then rescued by agronomist Héctor Vélez leading an eco-farm financed by the Gemio family for 17+ years. Claims underground earth walls retain heat and humidity, minimizing scarce water use. Says walipinis save money vs external structures that Altiplano winds and solar radiation frequently destroy; main initial investment is excavation labor.

Evidence tier: news. Syndicated summary citing BBC/periodistadigital; not primary ethnographic fieldwork.

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