thung salaeng luang national park . savannah field and pine tree . phetchabun and phitsanulok province . northern of thailand . la

asia background countryside day daylight daytime environment farm field forest grass grassland green high hill jungle landscape luang meadow mountain nation national natural nature north northern outdoor park pasture phetchabun phitsanulok pine rural salaeng savanna savannah scene season summer thai thailand thung tourism travel tree tropical view wind winter yellow