Archaeologists excavating Sri Lanka's ancient Yapahuwa Kingdom have uncovered a unique underground clay pipeline system and artifacts suggesting ordinary citizens lived within the royal capital, offering unprecedented insight into medieval urban life.
A new archaeological excavation at Yapahuwa, Sri Lanka's fourth kingdom, has uncovered evidence of a residential settlement occupied by ordinary citizens during the medieval period. The Central Cultural Fund launched the project in 2025 under Professor Mangala Katugampola's direction, employing advanced technologies including LiDAR and Ground Penetrating Radar to examine areas between the kingdom's inner and outer fortification walls.
The most significant discovery involves a distinctive underground clay pipeline system with three separate subterranean networks running parallel to one another—a find without known precedent elsewhere in Sri Lanka. The excavation has also yielded an extensive collection of artifacts including clay lamps, pottery fragments, Chinese porcelain pieces, metal nails, and various clay objects. According to Professor Katugampola, these items appear unrelated to monastic use, suggesting they belonged to common residents rather than Buddhist monks or royalty.
Historically, archaeological findings at Sri Lankan sites have predominantly revealed monasteries and royal palaces, leaving significant gaps in understanding how ordinary people lived. Yapahuwa emerged as a major capital in the 13th century under King Bhuvanekabahu I, following the collapse of Polonnaruwa Kingdom after a South Indian invasion by Kalinga Magha. Though the kingdom existed for only approximately 12 years, it became renowned for sophisticated defenses and exceptional craftsmanship, including the famous stone staircase and lion sculptures.
Researchers believe these discoveries will substantially enhance understanding of Sri Lanka's medieval urban development, social structures, and settlement patterns. The findings complement earlier discoveries of foreign coins at Yapahuwa indicating international connections, potentially providing deeper insights into the kingdom's economic and social organization during this crucial period of Sri Lankan history.
