It started with earthquakes in April and then an initial explosion on June 7 followed on June 12 by this ash plume reaching 28 miles (40km) into the sky. The “cataclysmic” explosion occurred on June 15-16.
Here’s Clark Air Base afterward, covered with ash inches thick.
The atmospheric dust cloud as seen from space that cooled the planet by 1° C for a year or more.
There’s a photo at this article in a Manila newspaper marking the anniversary that you do not want to miss.