Between 1985 and 1989 archaeological excavation was conducted and discovered fragments of pottery, ceramics, beads, and brick structure. The Chinese ceramics discovered here are dated from Tang, Sung, Yuan and Qing dynasties, spanning the 7th to 19th centuries. Excavation in Cempaka island revealed a brick structure buried deep with east–west axis. Other than canals and the small brick structure, there are no significant building or temple ruins discovered on this site. Archaeology experts suggest the lack of building ruins is because the site is located near a large river surrounded by tropical rainforest with no stone quarry near the area. As the result the temple, palace, and houses were probably built from wood and bricks, organic materials that easily decay and were destroyed by frequent flooding of the river and humidity in less than 200 years.
