This image is from a temporary research camera positioned on the north rim of Mokuʻāweoweo, the summit caldera of Mauna Loa volcano by the USGS Hawaiian Volcano Observatory. If you look carefully around early morning or late evening, you may see a few thermal areas emitting steam.
Courtesy of USGS Hawaiian Volcano Observatory.

This image is from a temporary thermal camera located on the north rim of the Mauna Loa summit caldera. The temperature scale is in degrees Celsius up to a maximum of 500 degrees (932 degrees Fahrenheit) for this camera model, and scales automatically based on the maximum and minimum temperatures on the caldera floor and not the whole frame, which sometimes results in the rim (bottom of image) looking saturated (white).
Courtesy of USGS Hawaiian Volcano Observatory.

This image is from a research camera positioned on the south rim of Mokuʻāweoweo, Mauna Loa's summit caldera, in Hawaiʻi Volcanoes National Park. The camera looks north-northwest, focusing on the southern part of the caldera. The 1940 cone is just right of center; the 1949 cone is on the caldera rim at left. The high point of Mauna Loa's summit is in the background.
Courtesy of USGS Hawaiian Volcano Observatory.

This image is from a research camera positioned on the south rim of Mokuʻāweoweo, Mauna Loa's summit caldera, in Hawaiʻi Volcanoes National Park. The camera looks west-southwest, across South Pit, focusing on the south part of Mauna Loa's summit region and upper Southwest Rift Zone.
Courtesy of USGS Hawaiian Volcano Observatory.

This image is from a research camera positioned in the observation tower at the Hawaiian Volcano Observatory. The camera looks northwest toward the summit and Northeast Rift Zone of Mauna Loa.
Courtesy of USGS Hawaiian Volcano Observatory.

This image is from a research camera positioned on a cone in the Southwest Rift Zone of Mauna Loa in Hawaiʻi Volcanoes National Park. The camera looks northeast (upslope), focusing on the middle part of the Southwest Rift Zone. The volcano's summit is at upper right.
Courtesy of USGS Hawaiian Volcano Observatory.

This image is from a research camera positioned on a cone on the Southwest Rift Zone of Mauna Loa in Hawaiʻi Volcanoes National Park. The camera looks northeast (upslope), focusing on the upper part of the Southwest Rift Zone. The upper flank of Mauna Loa forms the skyline.
Courtesy of USGS Hawaiian Volcano Observatory.