Magma building up in Philippines' Mayon volcano

Fewer earthquakes have been recorded in the Philippines' lava-spilling Mayon volcano, but magma continues to build up inside and any lull in activity could be followed by a bigger eruption, scientists said Saturday.

Magma building up in Philippines' Mayon volcano

Also:

• Volcano video
• Photos of Mayon
• Info on U.S. volcanoes