The basaltic lava flow, known as the Carrizozo Malpaís, covers around 130 square miles (337 square kilometers) and is around 50 miles (80 kilometers) long.

A 2.35-billion-year-old meteorite with a unique chemical signature, found in Africa in 2023, plugs a major gap in our understanding of the moon's volcanic history.

This basaltic flow also overlaps a slightly older flow (about 3.3 billion years old), visible further west, but the younger flow is distinct because it has higher iron oxide and titanium dioxide ...

In more recent history, around 400,000 years ago, runny basaltic lava from Newberry Volcano to the south flowed over much of the tuff, leaving only the tall spires exposed above the flow.

Previously, it was thought that the youngest eruption in the region was the rhyolite lava of the Pitchstone Plateau about 70,000 years ago, while the youngest known basalt flow was 120,000 years old.

The Timber Hill basalt is an ancient lava flow that now forms a prominent mesa in the area, standing high above Sweetwater Canyon where the road passes beneath towering cliffs of dark basalt near ...