The group at the trailhead getting ready to walk to the top of the volcano

An unusual form of graffiti

The left side of Poas crater

The right side of Poas crater

The near wall of the crater down to the acid lake

Clouds roll in over the north saddle

All of us

The photographer, sorely tempted to jump the fence

Temporary geology

Steam vents on the near side of the crater's central lake

More steam vents, on the south wall - this volcano is active

A closer look at the steam vents

An interesting flower

An odd plant with very big leaves - common in this area

I never knew tropical plants had such large leaves

Stairway into the visitor center