I'll refer to the The Tunnel of Eupalinos https://en.wikipedia.org/wiki/Tunnel_of_Eupalinos https://en.wikipedia.org/wiki/Tunnel_of_Eupalinos Which is Ancient

I'll refer to the The Tunnel of Eupalinos https://en.wikipedia.org/wiki/Tunnel_of_Eupalinos https://en.wikipedia.org/wiki/Tunnel_of_Eupalinos Which is Ancient Greek, and did not fail, but did require remedial engineering afterwards to make it work. > Apparently, the subsidence at the spring lowered the level of the water after work had begun, leaving the tunnel too high. A separate channel had to be dug below the east half of the tunnel to carry the water itself.