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The sestiles (holly bowers)

Arévalo de la Sierra, Almarza, Soria

1 Villages · 1 Monuments · 2 Nature · 2 Curiosities · 2 Historical milestones

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The sestiles (holly bowers)

Nature · Arévalo de la Sierra, Almarza, Soria

Image of Arévalo de la Sierra, not of the place itself.

The hollies close over to form natural vaults called sestiles, plant chambers where in summer the temperature falls some five degrees below the outside and in winter stays milder.

Photo: Jonroman (CC BY-SA 4.0)

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