The 1985 Nevado del Ruiz disaster in Colombia serves as a grim reminder of the destruction lahars can cause. Following an eruption, a massive mudflow buried the town of Armero, killing an ...

Lahars typically occur during volcanic eruptions ... Reitan managed to lift her out of the mudflow, and they rode on a huge ...

When this volcano eventually blows, it won't be lava flows or choking clouds of ash that threaten surrounding cities, but lahars: violent, fast-moving mudflows that can tear across entire ...

Mount Adams, Washington state's largest active volcano, is witnessing a surge in seismic activity. The seismic activity has ...