The volcano in Portland Oregon's Mount Tabor is an extinct volcanic
cinder cone. This volcano is one of 95 volcano vents in the
Portland Oregon area called the Boring Lava Field. (Boring is a
small town southeast of Portland.)
We think of a cinder as a piece of ash from a campfire that got
in our eye or the leftovers from coal in a Charles Dickens story.
This is something entirely different. The cinders from the volcano
range from the size of fireplace ash to small stones at the cone.
At various places throughout the park are pieces of cinder ejected
by the pressure of the eruption that are over three feet
across.
We also think of cinder as black or gray. In this cone, there
are layers of blacks, browns, reds, and grays in multiple shades
and sizes.
To log this cache, please e-mail me the seven-word
organization that placed the plaque at the above coordinates. Near
the plaque are some of the larger cinders. Follow the steps to the
right of the plaque down to the fence protecting the cinder cone to
see the uniqueness of this volcano. Logs with the answer
included will be deleted
Go ahead and log your visit after you e-mail your answer. It
is easier to keep track if I get the answer and the log e-mail at
nearly the same time.
Other attractions in Mount Tabor Park are an amphitheater next
to the cinder cone, rest rooms, covered picnic areas, hiking
trails, and both on-leash and off leash dog areas.
For more information on the park itself, see the Mount Tabor
Park page http://www.parks.ci.portland.or.us/Parks/MtTabor.htm
For more detailed information on both the Mount Taber Cinder
Cone and the Boring Lava Fields see
http://vulcan.wr.usgs.gov/Volcanoes/Oregon/BoringLavaField/description_boring_lava.html