March 2024 — Hualālai GPS Survey

To conduct the Hualālai campaign survey, HVO staff requested permission from land managers before navigating to benchmarks cemented into the ground surface. Data collected at each location will together provide a picture of how the ground surface of Hualālai volcano has changed since the previous survey in 2015. The survey data will also provide important "background" information, supplementing and extending a several decades-long timeseries for monitoring Hualālai. USGS photo by A. Flinders.