Later, Ashoka built the caves of Lomas Rishi (without dated inscription, but posterior to Sudama on architectural grounds) and Karna Chopar (19th year of his reign), at a time when he had become a firm advocate of Buddhism, as known from the Edicts of Ashoka. It was initially thought that Karna Chopar may have been dedicated to the Buddhists, based on a former reading of the inscription at the entrance of the cave, corrected by Harry Falk in 2007: the new reading shows that Karna Chopar too had been dedicated to the Ajivikas. Since Lomas Rishi has no dedicatory inscription, it has been suggested that it may had been dedicated to the Buddhists. The affiliation of Lomas Rishi to Buddhism, although unproven, would be coherent with the fact that the architecture of the gate of Lomas Rishi became a reference for the development of the Chaitya arch in Buddhist cave architecture for the following centuries, whereas the Hindus or the Jains caves essentially did not follow this architectural example. This would also mean that the decorated gate of Lomas Rishi was a Buddhist invention, which was emulated in Buddhist architecture in the following centuries. After the Barabar caves, the earliest known rock-cut Buddhist monasteries date to the 1st century BCE in the Western Ghats in western India, such as the Nasik Caves.