Then there was the one about the geysers. Louis came with inquisitive new friends that he'd met in the campground. 'What happens if you put an ice cube down a geyser?' The ranger patiently answered that it was unlawful to put anything down them but an ice cube was unlikely to make any difference. The same hand went up in the air thirty seconds later. 'What would happen if you put 100,000 ice cubes down a geyser........by accident?!' The erupting super volcano was again touched upon (there was a bit of overlap in the talks). Again a small boy with a very vivid imagination needed answers. 'If you put two thermo-nuclear warheads either side of the super volcano to reduce the impact of the blast, would this be helpful?' The poor ranger looked exasperated. 'Look!' he said 'If this thing blows we'd be in enough trouble without the addition of thermo-nuclear devices!'
Back to the bison. We encountered one at very close quarters as we turned a bend on our final drive in Yellowstone, out of the park. He was walking resolutely towards our car. My plan was to slowly veer to the other side of the road and get by. Then another tourist came in the opposite direction and blocked my escape route by stopping to take photos! With about ten feet to go the bison changed direction and we snuck past. He could have been in a petulant, skeptical or happy mood. Who knows? There was no doubting our emotion though. We were scared!