Basically no tourists in this park and even locals are not really noticed about this beauty, so do I until today for this year. If you have some time to spend not only touristic spots, then I can recommend to visit this park. The park also have playground equipment. Better to visit during daylight to avoid meeting wild animals!!
Access:
about 15mins walk from Miyazu station or about 10mins from Amanohashidate station by bicycle.