We climbed up to this loch, which was created by a dam. From here, the water rushes downhill through a tunnel to a hydroelectric plant. Throughout the journey, I’ve been impressed by the scale of the engineering; yesterday, we followed an abandoned hillside railroad, and on another day, passed a Victorian aqueduct built for Glasgow’s water supply. While this dam dates from the 1950s, contrails stretching across the sky offered a nod to even newer technologies.
