After we went through the forest, we came to a huge snow field. A driver of my sled was an owner of this dog park, so I could sit on the sled with an easy mind and I could take lots of good pictures during my short trip.

Driving a sled looked hard, however sitting on a sled was very easy. It had a comfortable ride.
right:
Driver of my sled was the owner of this dog park.

I heard that both male and female reindeers have antlers. Their antlers grow each year. Male's antlers start to grow in spring and they fall off from autumn to winter. Female's antlers were the opposite. This reindeer only had one big antler, so I thought it was probably a male reindeer.