One of the most remarkable images out of Spain yesterday is from this town in Aragón.

That's a lot of water, but the dam — which was ordered built by the Emperor Augustus — held firm, just as it has for the past 2000 years.

Roman concrete: Never leave home without it. https://t.co/Qh2vHIsyL2

— Aitor Hernández-Morales (@aitorehm) October 31, 2024
.....