This photo shows the Australian Navy's HMAS Adelaide docked at Vuna Wharf in Tonga's capital Nukualofa on Jan. 26 to deliver aid following the Jan. 15 eruption of the nearby Hunga Tonga-Hunga Haapai underwater volcano. Tonga's deputy chief of mission in Australia Curtis Tu'ihalangingie told Reuters that the infected dock workers were not at the same wharf the HMAS Adelaide docked at. Mary Lyn Fonua/Matangi Tonga/AFP via Getty Imag hide caption
Volcanic ash covers rooftops and vegetation in an area of Tonga last week. Thick ash on an airport runway was delaying aid deliveries to the Pacific island nation, where significant damage was reported. CPL Vanessa Parker/New Zealand Defense Force/via AP hide caption
Red Cross teams set up a temporary shelter in Kanokupolu, western Tongatapu, on Friday as the Tonga island group grapples with the aftermath from the recent underwater volcanic eruption. Tonga Red Cross Society/via AP hide caption
The Tonga volcano on December 24 2021 as seen from a satellite. The eruption turned explosive, in what nuclear monitors say was the biggest bang they've ever recorded. Maxar hide caption
The island of Hunga Tonga-Hunga Ha'apai as imaged by the satellite company Maxar on Jan. 6 (left) and Jan. 18 (right). It was obliterated in a volcanic eruption that scientists estimate was 10 megatons in size. Satellite image ©2022 Maxar Technologies hide caption
This photo released by the the National Galapagos Park communications office shows lava from the eruption of Wolf Volcano on Isabela Island, Galapagos Islands, Ecuador, on Friday. Wilson Cabrera/National Galapagos Park communications office via AP hide caption
A fissure is seen next to a house covered with ash on the Canary island of La Palma on Dec. 1. Authorities on the Spanish island are declaring a volcanic eruption that has caused widespread damage but no casualties officially finished. Emilio Morenatti/AP hide caption
Indonesian villagers stand with Mount Semeru in the background on Saturday. Indonesian authorities raised the alert level for the highest volcano on Java island, saying it could blow up again after a sudden eruption earlier this month that killed dozens of people and left thousands homeless in villages that were buried in layers of mud. Hendra Permana/AP hide caption
Lava from a volcanic eruption surrounds a house on the island of La Palma in the Canary Islands on Thursday. Emilio Morenatti/AP hide caption
Two people are seen silhouetted against a night sky turned red by the eruption of Congo's Mount Nyiragongo on Saturday. Justin Kabumba/AP hide caption
Plumes of ash rise on Friday from the La Soufrière volcano as it erupts on the eastern Caribbean island of St. Vincent, as seen from Chateaubelair. Orvil Samuel/AP hide caption
Mount Merapi, Indonesia's most active volcano, spews rocks and gas into Wednesday's morning sky. Agung Supriyanto/AFP via Getty Images hide caption
Lava cascades into the summit water lake at the Kilauea volcano on Hawaii's big island. The eruption began late Sunday within the volcano's Halemaumau crater, at the summit of Kilauea. USGS hide caption
Officials say threat levels are at a "yellow phase 2," and are warning people to stay away from the volcano and its crater "due to the danger of falling ballistic fragments." webcamsdemexico hide caption
Smoke billows from White Island after a volcanic eruption on Monday. Officials say some people remain unaccounted for and it remains too dangerous for emergency services to access the island. George Novak/AP hide caption