Finally, we stopped at the Norris Geyser Basin and toured the smoking basin, the hottest thermal area in Yellowstone. On the long drive back to the lodge in the Bombardier, we passed more swans and many bison. We had to wait from some bison to get off the road. We were told that this was the last winter for the Bombardiers and that they were all to be auctioned to the highest bidder, to be replaced by more modern vehicles.