The watery thermal dynamics of the most well-known geyser,
Old Faithful, erupting at
Yellowstone National Park in the winter and summer with
the first scenes from the perspective of a captivated
visitor followed by a time-lapsed look from Observation
Point.
Old Faithful is one of nearly 500 geysers in Yellowstone and
one of six that park rangers currently predict. It is
uncommon to be able to predict geyser eruptions with
regularity and Old Faithful has lived up to its name, only
lengthening the time between eruptions by about 30 minutes
in the last 30 years.
Thermal features change constantly and it is possible Old
Faithful may stop erupting someday. Geysers and other
thermal features are evidence of ongoing volcanic activity
beneath the surface and change is part of this natural
system.
Yellowstone preserves the natural geologic processes so that
visitors may continue to enjoy this natural system.
