four empty rowing boats stop over the river at trang an grottoes in ninh binh, vietnam

adventure ancient area arm asia asian attraction background beautiful binh blue boat boats coc colorful conical destination empty feet field floating four from green grottoes hat her heritage indochina lake land landscape limestone long man many mountain natural nature ninh outdoor over people purple river row rowing scenic sky stop summer tam tour tourism tourist traditional trang transportation travel tropical vietnam vietnamese view walking water wearing woman