The best way to appreciate Volcán Reventador is actually to sign up on a hardcore adventure tour in this privately owned cloud forest reserve, sitting between 1500 and 2000m on the other side of the valley from the volcano. Trips must be booked in advance through their Quito office.
After a tough four-hour hike up from the village of San Carlos, you reach what must be one of Ecuador's remotest accommodation options.
Basic cabins are strung with hammocks and garner great views of Reventador's antics. Hikes then lead off into the adjoining Parque Nacional Sumaco Napo Galleras. Wildlife sightings are great, as development within the park has mercifully been minimal.