Lalu is a natural phenomenon that is caused by the erosion from the rain, subsiding, or soil erosion since the hard soil is durable and does not erode. When it is being eroded by the wind, it makes several shapes like the city wall or a cliff.
Some of them look like sticks, just like a natural source around Phae Mueang Phi, Phrae province, but smaller. Lalu has an area of more than 2,000 rai and is one of the Unseen Thailand that should be visited.
Location: Thappharat, Ta Phraya, Sa kaeo 27000 Thailand