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.
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
- Phil Ower
- Ann K.
None after the hint