Deep within the mist-covered slopes of the Mount Muria region in Central Java, archaeologists have identified the foundations of a 1,300-year-old Hindu temple dedicated to Akasha, the personification of the sky or ether. The site, which dates to the Early Mataram period, was located using advanced LiDAR mapping that cut through the dense canopy. The structure is built from volcanic andesite and features a unique open-roof design, intended to keep the sanctum in direct contact with the sky.
The temple is architecturally distinct due to its wind-tunnel chambers, which were carved into the base to create a whistling sound when mountain breezes passed through, simulating the 'voice of the sky.' This find is considered a missing link between the early mountain sanctuaries of the Dieng Plateau and the later, more complex temple complexes of Prambanan. Excavations are currently focused on recovering ritual objects, including several silver-alloy ritual vessels found buried near the altar.