Normally, a ticket to Yudanka is 1320yen one way, 2640yen round trip, but for whatever reason, there exists a special ticket that only costs 1500yen which not only includes round trip but also free entrance into a hot spring.
The ride from Nagano station to Yudanka station is about an hour or less. As we got closer to Yudanka, the weather became colder and colder until it started snowing. When we got off the train, it was freezing.
From the Yudanka station, we then took a local bus to the park entrance. From the entrance, it was about a half hour hike up the mountain to the Monkey park entrance.
Despite the freezing weather, everyone still enjoyed themselves because the view was breathtaking. It was all quite serene.
Upon reaching the Monkey park, we were not disappointed. From what I read, I thought there was going to be very few monkeys and that all the visitors would be packed together in a single line through the park, but no, you could walk anywhere as long s you respected the monkeys. And man were there monkeys. There were monkeys everywhere.
Jigokudani Monkey Park was a wonderful place.