Today, the Cagsawa Ruins is a tourist site and a grim reminder of Mount Mayon's danger.
Climbers are required to seek permission from government agencies before they climb Mount Mayon.
Rescue teams and helicopters were sent to Mayon volcano in the central Philippines to bring out the dead.
Mount Mayon has erupted 48 times, with the last time being in 2009.
Five days after Mount Mayon erupted, all were grounded because of safety fears.
If the official machinery for responding to disasters worked at Mount Mayon, it was partly because there was plenty of warning.
Institute Director Renato Solidum said the explosion early Tuesday was "steam-driven" and is considered "normal" activity for a volatile volcano like Mount Mayon.
He said he would still climb mountains, but not Mount Mayon.
The head of the Philippine Institute of Volcanology and Seismology, Renato Solidum, said Tuesday's eruption was normal for the restive Mayon, about 340 kilometers (212 miles) southeast of Manila.
Mr. Mabao was 16 when he started guiding tourists up Mount Mayon and is a member of the Panaway Mountaineer Group, which usually climbs the 2, 440-metervolcano three to four times a week.
Also contributed earlier last year to help the earthquake victims in Japan and, in 2010, assisted tsunami victims in Indonesia, survivors of the Mayon Volcano eruption in the Philippines and flood victims in Pakistan.
Mr. Mabao was 16 when he started guiding tourists up Mount Mayon and is a member of the Panaway Mountaineer Group, which usually climbs the 2, 440-meter, or 8, 000-foot, volcano three to four times a week.
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