In the evening, we started packing seriously for the next day's flight, and did laundry, expecting the next day to be fairly hectic.
Our last day in Iceland started with a walk near the Grotta Island Lighthouses. The lighthouses themselves were closed because Arctic Terns were visiting. Those birds fly between the Arctic and Antarctic, all the reason not to disturb them.
Then we went to the airport, where I unloaded everyone, returned the big van, got a small rental car, and then took everyone out to lunch. After lunch, it was time for everyone except me to return home to San Francisco, while I took the small rental car over to pick up my bike box and drive around. We had neglected the area near Hafnir, so I took the time to visit those places.
Blue Lagoon. I then took a swim at the local swimming pool and then slept at a cheap hotel which turned out to be closer to a hostel than a hotel, though with very friendly owners.