The summit caldera of Mount Tambora. This file is in the public domain because it was created by NASA. NASA copyright policy states that “NASA material is not protected by copyright unless noted.”
BRANCH is an open-access publication 
The summit caldera of Mount Tambora. This file is in the public domain because it was created by NASA. NASA copyright policy states that “NASA material is not protected by copyright unless noted.”
BRANCH is an open-access publication