Discovery Hill Trail-Head Location Off North St. Charles St.SalmonIdaho83467Lemhi County Next Event Nine-and-a-Half Hours of Disco 2024 - 05/04/2024 - 10:00 am - 7:30 pm Loading Map.... Discovery Hill Trail-HeadOff North St. Charles St. - SalmonEvents 45.182961 -113.884922 Upcoming Events Nine-and-a-Half Hours of Disco 2024 - 05/04/2024 - 10:00 am - 7:30 pm