Muara Cianten Inscription, Carved boulder in Ciaruteun Ilir, Bogor Regency, Indonesia

Prasasti Muara Cianten is a stone inscription located on the banks of the Cisadane River in the Cibungbulang district of Bogor. The stone displays carved patterns with interlocking designs that reflect the artistic traditions of its era.

The stone was discovered in 1864 by N.W. Hoepermans and dates to the Tarumanagara Kingdom period between the 5th and 7th centuries. This inscription stands as one of the few surviving written records from that early era.

The carvings are not Sanskrit writing but tendril and spiral motifs emerging from a bulb, called pilin or ikal. The stone is locally known as Prasasti Pasir Muara, after Kampung Pasirmuara. It remains in its original position on the Cianten riverbank.

The boulder sits in shallow water at the edge of the Cisadane near the mouth of the Cianten, in Kampung Pasirmuara, Ciaruteun Ilir village, Cibungbulang, Bogor Regency. It remains in its original position, so visitors view the carved face from the bank; the wet upper surface and greenish growth along the lower edge show the stone is regularly reached by the river.

The carvings are not letters but tendril and spiral motifs growing from a bulb, which is why the stone is called an inscription despite lacking readable text. The Sundanese source notes that its script, called Aksara Ikal or conch-shell script, has never been fully deciphered.