Pyroclastic flows exploded from the crater and reached the mountain's icecap, melting it and forming lahars, volcanic mudflows and debris flows that cascaded down the mountain into several river valleys below.
These lahars cascaded down the mountain into several river valleys below. Pyroclastic flows exploded from the crater and reached the mountain's icecap, melting it and forming lahars (volcanic mudflows and debris flows).
Pyroclastic flows exploded from the crater and reached the mountain's icecap, melting it and forming lahars (volcanic mudflows and debris flows). These lahars cascaded down the mountain into several river valleys below.
Pyroclastic flows exploded from the crater and reached the mountain's icecap, melting it and forming lahars (volcanic mudflows and debris flows). These lahars cascaded down the mountain into several river valleys below.