Visitors enter a cave in Lhoong, Aceh province in Indonesia on December 22, 2019. The cave is believed to be about 7,400 years old and holds deposits of previous tsunamis. (Photo/Agencies)
Visitors enter a cave in Lhoong, Aceh province in Indonesia on December 22, 2019. The cave is believed to be about 7,400 years old and holds deposits of previous tsunamis. (Photo/Agencies)
Visitors enter a cave in Lhoong, Aceh province in Indonesia on December 22, 2019. The cave is believed to be about 7,400 years old and holds deposits of previous tsunamis. (Photo/Agencies)