A Geological and Biological Anomaly
Mount Popa is an extinct stratovolcano, rising 1,518 meters above sea level in the arid plains of central Myanmar. Its last eruption is estimated to have occurred in 442 BCE. Adjacent to the main volcano, known as Taung Ma-gyi ("mother hill"), is a sheer-sided, 737-meter-tall monolith called Taung Kalat. This dramatic formation is a volcanic plug, a core of hardened magma that solidified within the volcano's vent. Over millennia, the softer outer layers of the volcano eroded away, leaving this resistant neck of rock standing in isolation.
The fertile volcanic ash from past eruptions has created an oasis in Myanmar's central dry zone. The mountain area receives more rainfall than the surrounding region and gives rise to over 200 springs and streams. This unique microclimate supports a biodiversity. In 1989, a 128.54 square kilometer area was established as Popa Mountain Park to protect this ecosystem. Recently, in December 2023, the area was designated as the Mount Popa National Geopark. The park hosts numerous species of mammals, reptiles, and insects, as well as about 140 bird species. The forests contain valuable trees like teak and sandalwood, along with a variety of medicinal plants.
A Synthesis of Beliefs
The imposing geological presence of Taung Kalat made it a natural center for animist worship long before Buddhism arrived in the region. These local beliefs center on nats, a diverse group of spirits. There are two main types: nature spirits inhabiting natural features and nat sein, who are the ghosts of humans that suffered violent deaths.
In the 11th century, King Anawrahta of the Bagan Empire sought to establish Theravada Buddhism as the state religion and initially tried to suppress nat worship. He ordered the destruction of nat shrines, but the people continued their practices, often using coconuts as symbolic representations of the spirits. Realizing he could not eliminate the entrenched beliefs, Anawrahta adopted a strategy of incorporation. He created an official pantheon of the 37 most powerful nats—often called the "Great Nats"—and formally integrated them into Buddhist practice as protectors of the faith. He had their images placed at the base of the prominent Shwezigon Pagoda, subordinate to a Buddhist deity, Thagyamin, who was declared their king. This act created a uniquely Burmese synthesis of the two belief systems that persists today. The monastery and shrines atop Taung Kalat serve as the primary home for these 37 Great Nats, making it Myanmar's most important site for spirit worship.