Postal Mail:

The Summit Lighthouse
63 Summit Way
Gardiner, Montana USA 59030-9314

 Email: TSLinfo@tsl.org

Customer Service Hours:

Mon, Tues, Wed & Fri: 9:30 AM – 5:00 PM
Thur: 10:30 AM – 5:00 PM (Mountain Time)

Phone:

US & Canada:
1-800-245-5445
Local Montana and International:
1-406-848-9500.