IMG_20210730_165911 Montady lake (4.3 square km), drained in the 13th century using 10 radial ditches (10 km total) and an underground tunnel to carry the water away.
Montady lake (4.3 square km), drained in the 13th century using 10 radial ditches (10 km total) and an underground tunnel to carry the water away.
IMG_20210730_165920 Montady lake (4.3 square km), drained in the 13th century using 10 radial ditches (10 km total) and an underground tunnel to carry the water away.
Montady lake (4.3 square km), drained in the 13th century using 10 radial ditches (10 km total) and an underground tunnel to carry the water away.

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