Rare look inside La Palma volcano

Members of the INVOLCAN technical team take measurements next to the crater of the Cumbre Vieja volcano, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez

David Martinez and Perla Pina, geophysicists of INVOLCAN, install measuring stations near the crater of the Cumbre Vieja volcano, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez

Pedro Hernandez, vulcanologist of INVOLCAN, looks on near the crater of the Cumbre Vieja volcano, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez

Members of the INVOLCAN technical team walk through the ash of the Cumbre Vieja volcano as they head to the crater, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez

Pedro Hernandez, vulcanologist of INVOLCAN, observes the main crater of the Cumbre Vieja volcano, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez

David Martinez and Perla Pina, geophysicists of INVOLCAN, install measuring stations near the crater of the Cumbre Vieja volcano, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez

Members of the INVOLCAN technical team walk through the ash of the Cumbre Vieja volcano as they head to the crater, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez

Members of the INVOLCAN technical team take measurements next to the crater of the Cumbre Vieja volcano, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez

Members of the INVOLCAN technical team take measurements next to the crater of the Cumbre Vieja volcano, in Cabeza de Vaca, on the Canary Island of La Palma, Spain, January 21, 2022. REUTERS/Borja Suarez