More on the Golden Circle tour - Þingvellir part 1, part 2 and part 3.
Our coach broke down just as we were leaving the car park at the bottom of Þingvellir, some problem with the handbrake that meant that the driver had to limp back to the car park at 5km/h. They dispatched another coach but let us out to wander around the area in the valley below the main Þingvellir tourist run. We took shelter from the rain in the church here, though its not a large church, seating perhaps 40 people.