Watching a geologist collect fresh hot-lava samples from an active volcano in Hawaii is both harrowing and deeply satisfying. While most people are familiar with “the floor being lava” as a ...

In the past, HVO would occasionally post images of people collecting lava samples on our website. These photos usually featured a person (with little-exposed skin) holding a rock hammer, with a metal ...

Hawaii’s Mokuʻāweoweo, or Mauna Loa, hadn’t seen any external activity for nearly four decades when it erupted in November. Lava flowed from the volcano’s caldera for almost two weeks; ash drifted ...