a monsoon degraded road among mountains and green forests, asia, vietnam, tonkin, bac ha, towards lao cai, in summer on a sunny

vietnam tonkin bac ha mountains green forests monsoon degraded road landscape travel nature degradation asia vietnamese mountainous greenery rain adventure trek seasons jungle tourism vegetation dangers harsh conditions verdant asian streams mist erosion landslides serenity hard weather trekking environment mood vacation exploration rainforest scenic cool adventurous