
Gravity is the power source in Holt’s bucolic plumbing system, with water from an elevated reservoir flowing down through the structure of pipes into a pre-existing ditch. Dating back to the 18th century, this ditch is dubbed a “ha-ha” by Irish hunters because of the surprise they experienced when encountering it. While the galvanized steel stands out as a contemporary presence in an otherwise historic landscape, the technology used in this structure has existed in civilization for centuries.