The engineering here is remarkable: precise right angle cuts on the spout demonstrate exceptional craftsmanship. Naga serpents and yali creatures are carved at the spout base with such skill they appear alive. Stone blocks fitted together without mortar have remained stable for thousands of years. A gravity-powered drainage system moves liquid through the temple walls. A false door on the exterior contains a giant spout with a drainage hole - notable Khmer hydraulic engineering.
Precision-engineered drainage system at Cambodian lingam temple

Key facts
- Perfect right angle cuts on spout, described as precision beyond chisel capability
- Naga (serpent) and yali (lion-like prehistoric animal) carved at spout base
- Two massive stone blocks fused together without mortar for thousands of years
- Drainage system designed to pull liquid through temple walls using gravity
- False door on exterior contains giant spout with perfectly cut drainage hole
- Serpent motif carved so precisely it appears alive
Sources
Varna Sutra - Yalis: Divine Defenders - Kanakavallikanakavalli.com
The yali defines spaces, carved into pillars and marking entryways, where it acts as a ferocious guard, protecting the temple from threats, both real and ...
Detritus Found in Drainage Channel Captures Ancient Jerusalem ...haaretz.com
Archaeologists excavating a drainage channel in Jerusalem from the Roman period have found perfume vials, sundry garbage and also intact ceramic lamps.
Pylon of the Nubian Lion Temple at Naga - Smarthistorysmarthistory.org
As an analysis of the Lion Temple in Naga demonstrates, Nubia and Egypt had a long history of interaction through trade, religion, and a shared ...
Ancient mortar technology of the 1600-year-old renowned Buddhist ...sciencedirect.com
As a joint mortar, its main purpose is to fill gaps and bind building blocks along with providing a soft bedding layer for building units. Plastering mortar ...
Building Blocks of Temples - Organiserorganiser.org
The construction technique is dry masonry; mortar is not used in the construction. Stone blocks are just placed on top of one another. They ...
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