Field, Grassland, Mound, Nature, Ground, asia, southeast asia, thailand, phrae, province phrae, landscape, nature, country, country side, landmark, forest park, park, sandstone, erosion, pae muang pee, muang pee, phae muang phi, muang phi, scenery, landmass, district, sedimentary rock, arenaceous rock, vicinity, geological process, rock, asian country