Contest #443: Dam at Covão dos Conchos, Serra da Estrela, Portugal

covao-conchos-serra-estrela-2

One of several lakes in the Serra da Estrela region of Portugal, Covão dos Conchos sits near Long Lake. When engineers wanted to create a lake here by damming the stream, they envisioned the water flowing from this lake to Long Lake. Although this lake is higher in elevation than long lake, there is a area between the two that is higher than either one.

mapa-covao-conchos

Since water doesn’t usually travel uphill very well, they came up with the idea of a long water tunnel fed by this funnel.

Those who found the holy lake before the hint included:

  • Eloy Cano
  • hhgygy
  • Garfield
  • Phil Ower
  • Lighthouse
  • Lelie
  • Junebug
  • Ann K.
  • RicardPG
  • joe9000

None after the hint