Karez Well

    Karez Well is reputed as one of the three major construction projects in ancient China, together with the Great Wall and the Grand Canal. The history of this unique underground irrigation system can be traced back over more than 2,000 years. Karez Well provided an innovative and elegant resolution to several problems, capturing melting snow and ice from mountains, and channeling it underground to where it was employed for irrigation, overcoming the interruptions to flow caused by sandstorms, wind and huge losses from evaporation that plague a ground-level, open canal system.