ACEH, INDONESIA - DECEMBER 26: Indonesians visit the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: A resident pours water and petals on a grave stone as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: Indonesians visit the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: Indonesians visit the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: A resident pours water and petals on a grave stone as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: A resident pours water and petals on a grave stone as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. It was one of the deadliest natural disasters in history. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: A resident pours water and petals on a grave stone as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. It was one of the deadliest natural disasters in history. Indonesia was the hardest-hit country, followed by Sri Lanka, India, and Thailand. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: A resident pours water and petals on a grave stone as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. It was one of the deadliest natural disasters in history. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: A resident pours water and petals on a grave stone as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. Indonesia was the hardest-hit country, followed by Sri Lanka, India, and Thailand. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: A resident pours water and petals on a grave stone as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. ( Junaidi Hanafiah - Anadolu Agency )

ACEH, INDONESIA - DECEMBER 26: An Indonesian woman prays as she visits the Ulee Lheue mass grave during the 12th anniversary of the 2004 Indian Ocean Tsunami, also known as Boxing Day tsunami, in Banda Aceh, Aceh Province, Indonesia, on December 26, 2016. It was one of the deadliest natural disasters in history. ( Junaidi Hanafiah - Anadolu Agency )