Fish rearing cages on northern tip of Lake Toba, the largest lake in SE Asia, Tongging, Lake Toba, Sumatra, Indonesia

Toba Batak dancers, North Sumatra, Sumatra, Indonesia, Southeast Asia, Asia

Batak houses, Lake Toba, North Sumatra, Sumatra, Indonesia, Southeast Asia, Asia

Feeding time for the Sumatran orangutan (Pongo abelii), Bukit Lawang Orang Utan Rehabilitation station, Sumatra, Indonesia, Southeast Asia, Asia

Mother and baby Sumatran orangutan (Pongo abelii) swinging through the forest, Bukit Lawang Orang Utan Rehabilitation station, Sumatra, Indonesia, Southeast Asia, Asia

Man pulling a canoe on the Bohorok River to transport tourist to the Bukit Lawang Orang Utan Rehabilitation station, Sumatra, Indonesia, Southeast Asia, Asia

Huge male Sumatran orangutan (Pongo abelii), Bukit Lawang Orang Utan Rehabilitation station, Sumatra, Indonesia, Southeast Asia, Asia

Rasta (Rastafarian) coloured beachfront accommodation at Sungai Pinang, near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Traditional Indonesian fishing boat on the beach at Sungai Pinang Fishing Village, near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Water Buffalo on the beach at Sungai Pinang, near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Sungai Pinang Beach and Rasta Beach Bungalows, near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Photographer taking a photo of an Orangutan in the jungle of Gunung Leuser National Park, Bukit Lawang, North Sumatra, Indonesia, Southeast Asia, Asia

Indonesian woman sorting coffee beans, Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Girl on boat in Sumatra, Indonesia, Southeast Asia, Asia

Girl on boat in Sumatra, Indonesia, Southeast Asia, Asia

Piso Waterfall outside Berestagi, Sumatra, Indonesia, Southeast Asia, Asia

Piso Waterfall outside Berestagi, Sumatra, Indonesia, Southeast Asia, Asia

workers in Padi Field, Sumatra, Indonesia, Southeast Asia

Buffalo and worker plough a Padi field, Sumatra, Indonesia, Southeast Asia

Small hut in the middle of Padi field in Sumatra, Indonesia, Southeast Asia

Small hut in the middle of Padi field in Sumatra, Indonesia, Southeast Asia

workers in a Padi field, Sumatra, Indonesia, Southeast Asia

workerin a Padi field, Sumatra, Indonesia, Southeast Asia

traditional fishing boat in Sungai Pinang, Sumatra, Indonesia, Southeast Asia

pulling in fishing nets, Sungai Pinang, Sumatra, Indonesia, Southeast Asia

Sungai Pinang, Sumatra, Indonesia, Southeast Asia

Sungai Pinang, West Sumatra, Indonesia, Southeast Asia

traditional fishing boat in Sungai Pinang, Sumatra, Indonesia, Southeast Asia

Sianok Grand Canyon (Ngarai Sianok), Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Couple jumping into the Pacific Ocean at Twin Beach, a tropical white sandy beach near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Tourist walking on Sungai Pinang Beach, near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Women working in rice paddy fields at Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Ploughing rice paddy fields with Water Buffalo near Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Pulau Weh Island landscape, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Toba Batak dancers, Samosir Island, Lake Toba, North Sumatra, Sumatra, Indonesia,Southeast Asia, Asia

Small hut in the middle of Padi field in Sumatra, Indonesia, Southeast Asia

Batak Houses at Lake Toba (Danau Toba), the largest volcanic lake in the world, North Sumatra, Indonesia, Southeast Asia, Asia

Rice terraces on eastern shore of crater lake, Lake Maninjau, West Sumatra, Sumatra, Indonesia, Southeast Asia, Asia

Jumping into the sea and playing in the ocean at Twin Beach, a tropical white sandy beach near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Bohorok River in front of the Bukit Lawang Orang Utan Rehabilitation station, Sumatra, Indonesia, Southeast Asia, Asia

Sungai Pinang Beach and Rasta Beach Bungalows, near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Rice terraces of the Minangkabau, a local matrilineal indigenous ethnic group, near Bukittingi, Sumatra, Indonesia

Old rusty fishing boats in a village at Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Female farmer working in a rice paddy field at Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Tuk Tuk, Samosir Island, Lake Toba, Sumatra, Indonesia, Southeast Asia, Asia

Huge hanging bridge spanning above the Bohorok river, Bukit Lawang, Sumatra, Indonesia, Southeast Asia, Asia

Man ready to work the rice paddies at Sungai Pinang, a traditional Indonesian village near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Rice paddy fields, Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Farmers working in a rice paddy field, Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Sungai Pinang, a fishing village near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Minivan exploring Pulau Weh Island, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Tourist exploring Lake Toba (Danau Toba) by motorcycle, North Sumatra, Indonesia, Southeast Asia, Asia

Tourist in a hammock at the beach, Pulau Weh Island, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Fisherman in a fishing boat on Lake Toba (Danau Toba) at sunrise, North Sumatra, Indonesia, Southeast Asia, Asia

Tourist at 120m Sipisopiso Waterfall, Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Church at Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Colourful Mosque near Sabang, Pulau Weh Island, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Sungai Pinang, a fishing village near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

The Istana Maimoon (Sultan's Palace), built 1888, Medan, North Sumatra, Sumatra, Indonesia, Southeast Asia, Asia

Lake Toba (Danau Toba), the largest volcanic lake in the world, North Sumatra, Indonesia, Southeast Asia, Asia

Bukit Lawang at sunrise, Gunung Leuser National Park, North Sumatra, Indonesia, Southeast Asia, Asia

Village scene, Toba Bataks, North Sumatra, Sumatra, Indonesia, Southeast Asia, Asia

Tourist on a jungle trek in Gunung Leuser National Park, Bukit Lawang, North Sumatra, Indonesia, Southeast Asia, Asia

Crater at the top of Sibayak Volcano, an active volcano at Berastagi (Brastagi), North Sumatra, Indonesia, Southeast Asia, Asia

Rice paddy fields and cliffs in the Harau Valley, Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Waterfall in the Harau Valley, Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Sungai Pinang Beach, near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Lake Toba (Danau Toba) and fishing boats at sunrise, North Sumatra, Indonesia, Southeast Asia, Asia

120m Sipisopiso Waterfall, Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Bukit Lawang at sunrise, Gunung Leuser National Park, North Sumatra, Indonesia, Southeast Asia, Asia

Tourist taking a photo of fishermen on Pulau Weh Island, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Traditional farming village of Sungai Angek near Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Palm tree landscape near Iboih, Pulau Weh Island, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Krupuk (Kroepoek) drying in the sun, Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Krupuk (Kroepoek) production, Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

White heron, Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Krupuk (Kroepoek) production, Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Typical Indonesian village in the foothills of Sinabung Volcano, Berastagi (Brastagi), North Sumatra, Indonesia, Southeast Asia, Asia

Tourist at the top of Sibayak Volcano at sunrise, Berastagi (Brastagi), North Sumatra, Indonesia, Southeast Asia, Asia

Couple on a traditional Indonesian boat trip to Marak Island, a tropical island near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Tourist jumping into the Pacific Ocean at Twin Beach, a tropical white sandy beach near Padang in West Sumatra, Indonesia, Southeast Asia, Asia

Rice paddy fields, Bukittinggi, West Sumatra, Indonesia, Southeast Asia, Asia

Fishermen on Pulau Weh Island, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Fishing boat on Lake Toba (Danau Toba), the largest volcanic lake in the world, North Sumatra, Indonesia, Southeast Asia, Asia

Tourist on a jungle trek in Gunung Leuser National Park, Bukit Lawang, North Sumatra, Indonesia, Southeast Asia, Asia

Fishing nets in a fishing boat on Lake Toba (Danau Toba), North Sumatra, Indonesia, Southeast Asia, Asia

Fishing boat, Pulau Weh Island, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Top of Sibayak Volcano at sunrise, Berastagi (Brastagi), North Sumatra, Indonesia, Southeast Asia, Asia

Baburrahman Mosque, Pulau Weh Island, Aceh Province, Sumatra, Indonesia, Southeast Asia, Asia

Coffee beans drying in the sun in a village in the foothills of Sinabung Volcano, Berastagi (Brastagi), North Sumatra, Indonesia, Southeast Asia, Asia

Bohorok River flowing through Bukit Lawang, Sumatra, Indonesia, Southeast Asia, Asia

Stilt houses with satellite dishes, Haranggaol, north shore of Lake Toba, North Sumatra, Sumatra, Indonesia, Southeast Asia, Asia

Decorated house in Minangkabau village of Pandai Sikat, West Sumatra, Minangkabau are matrilineal indigenous group, Sumatra, Indonesia, Southeast Asia, Asia

Fish rearing cages, Tongging, northern tip of Lake Toba, Southeast Asia's largest lake, North Sumatra, Sumatra, Indonesia, Southeast Asia, Asia

Batak woman carrying skeins of yarn to the looms under her traditional Batak house, Buhit, Samosir Island, Lake Toba, Sumatra, Indonesia, Southeast Asia, Asia

Construction of traditional style Batak house with bamboo scaffolding, beside the volcanic Lake Toba, Samosir Island, Sumatra, Indonesia, Southeast Asia, Asia

Rice paddy fields, with heavy monsoon clouds gathering over volcanic crater hills across Lake Toba from Samosir Island, Sumatra, Indonesia, Southeast Asia, Asia

Young Batak woman performing courtship dance, bowl of water and leaves symbolising commitment, Huta Bolon, Simanindo, Sumatra, Indonesia, Southeast Asia, Asia

Stone tomb of Anting Malela Boru Sinaga, bowl on her head as a sign of her betrothal to the King, Tomuk, Samosir Island, Sumatra, Indonesia, Southeast Asia, Asia

Rice paddy fields, with heavy monsoon clouds gathering over volcanic crater hills across Lake Toba from Samosir Island, Sumatra, Indonesia, Southeast Asia, Asia