Limestone karsts and isles of Ha Long Bay, Quang Ninh, Vietnam

outdoors day daytime plant tranquil rugged boat marine cliff lush vessel coast asia plants cliffs landscapes scenics tropical island boats coastal nautical boating limestone ships watercraft fishing boat tropical climate world heritage site southeast asia vietnam vietnamese blue sky blue outside nobody scenic trees travel foliage landscape tree ocean color image fishing boats unesco water travel destination travel destinations rock unesco world heritage site non urban scene nautical vessel isle karst no one no people isles ha long bay indochina karsts ha long