We had an awesome opportunity to play around with long exposures, to try and capture, at least to a small degree, the extraordinary activity we were witnessing. It was mesmerizing, watching these glowing red boulders, probably the size of small cars, 'calve' off at the top, tumble down the side of the mountain, gradually gaining speed, throwing off dozens of pieces as they bounced and rolled along, smashing into the mountain-side, and achieving high velocity and drawing huge red arcs in the air before they eventually came to rest somewhere near the bottom. We could literally sit in our rooms at the Arenal Observatory Lodge, and watch this through the window, or shoot from the little balconies right outside our rooms. I sat for long periods of time watching this through the binoculars, and just couldn't look away. Even though it was past midnight, and we were exhausted from all the activity thus far, it was almost impossible to pull yourself away, and go to sleep!