In the Peruvian town of Cumbe Mayo are the ruins of an unusual | UnManifest History

In the Peruvian town of Cumbe Mayo are the ruins of an unusual canal built in 1500 BC.

Although there was no problem with water in the region, the Incas hollowed out a five-mile-long canal in the rock.

The shape of the channel is a mystery - straight angles of 90 degrees with smooth walls and smooth, polished turns of the channel. It feels as if the stone was carved like a cookie cutter.

There is no logical explanation from scientists about the shape of the canal, "it was built for beauty" - that's all the reasoning