...have gear will climb.

...looking up the route toward the summit.

The parts of the Automatic Weather Station had to be carried up the glacier. It actually took many trips over several days with the help of local porters, to transport equipment from base camp to the summit.

The hike began with a steep section.

The penitents were difficult to cross.

Ice falls occur where the glacier flows over a steep discontinuity in the bedrock.

...now up one steep section onto a flat part.

...the resting spot between the north and south peaks at 6,035 m (19,800') elevation.

A group ascends toward the summit.

The hike from the saddle to the summit was steep... repeat: 10 steps... 20 breaths.

...looking down at the saddle from within 300 m (984') of the summit.

Arrival at the summit, August 23. Ice core drilling was in progress.

Our camp near the summit 6,225 m (20,420').

Automatic Weather Station installed at the summit of Nevado Coropuna (6,425 m, 21,080').

Another view of the completed station with toward the northwestern lowlands.

Job complete! Let's climb down and enjoy more abundant air!

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Photos:  J. E. Box