Kandy Lake Walakulu parapet brickwork: triangular lamp niches and flood relief hydraulics?
How did 19th-century royal masonry builders construct the crenellated "cloud-drift" wall of Kiri Muhuda to illuminate temple waters during night festivals?
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4 Answers from travellers
The Walakulu Bamma (Cloud-Drift Wall) encircling Kandy Lake was designed by master royal builder Devendra Mulachari in 1807. Constructed of kiln-fired clay bricks coated with hydraulic lime plaster, the parapet features a rhythmic undulating crest resembling billowing clouds. The wall is pierced with hundreds of triangular niches (Pahan Kodu) engineered to hold small terracotta oil lamps (Mati Pahan) fueled by coconut oil. During Vesak and the Esala Perahera festival nights, thousands of flickering clay lamps reflect off the dark lake waters, illuminating the sacred boundary of the Dalada Maligawa.
The open triangular apertures serve a dual structural function: venting surface flood splash during monsoon wind storms, reducing wave pressure against the wall.
The British capture of Kandy in 1815 halted construction before the entire lake perimeter was finished, leaving incomplete parapet sections visible today.
Strolling along the Walakulu wall at dusk provides cool breezes and views of the octagonal Pattirippuwa tower illuminated against the evening sky.
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