Dog #2, who never tires.

Dog #1, who never tires, exploring La Malinche.

Dog #1 exploring La Malinche. We didn't go any higher than this.

Dog #2. We didn’t go any higher than this.

Popocatépetl. This is about as close as you can get.

Popocatépetl. This is about as close as you can get.

Iztaccíhuatl.

Iztaccíhuatl.

Flowers sprinkled with ash from Popo.

Flowers sprinkled with ash from Popo.

Ash stuck on the park sign!

Ash stuck on the park sign!

On the way to Paso de Cortés.

On the way to Paso de Cortés.