The original Zay Valley, a side valley of the Solda Valley, stretches from 1,850 metres up to the peaks and glaciers of the Vertainspitze and Hoher Angelus, which rise above 3,500 metres. Its pure mountain spring water has a constant temperature of 7°C, a pH value of 7.5 and a total hardness of 5.5 °dH – ideal conditions for brewing ZAY beer.