Santiaguito Blows

Every 20 to 40 minutes, Santiaguito erupts. This fantastic sight, an ash laden plume billowing in to the sky, is accompanied by a roar akin to an aircraft, and the sound of large rocks crashing into the ground. Even from this safe viewing distance, clouds of sulphur laden gasses would blow over us. We watched for about 2 hours (maybe a bit more), and witnessed four eruptions.