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MIL-OSI USA: Photo & Video Chronology — April 15, 2025 — Kīlauea summit UAS flights

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Source: US Geological Survey

Photo & Video Chronology — April 15, 2025 — Kīlauea summit UAS flights

On April 15, USGS Hawaiian Volcano Observatory geologists flew UAS (uncrewed aircraft systems) into Halemaʻumaʻu to monitor the ongoing Kīlauea summit eruption. 

A view of the north and south vents within Halemaʻumaʻu, Kīlauea volcano, on April 15, 2025, taken from the south rim of the caldera. USGS Hawaiian Volcano Observatory geologists measured the height of the crater wall behind the vents using a laser rangefinder. The distance between the lowest part in the center of the south vent and the lava flows at the lava flows at the top of the crater wall is approximately 150 meters (492 feet) on April 15, 2025. With every eruptive episode, this measurement changes as the cones around the vents grow with new material added to them.  USGS photo by K. Mulliken. 

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