Mountain History Museum: Open Fridays, noon to 4 p.m.; weekends, 10:30 a.m. to 4:30 p.m. through Oct. 22; then closed until Thanksgiving weekend. E-Bike Tours: Embrace the beauty of Crestline. Saturdays and Sundays: 10 a.m.-12 p.m. and 2-4 p.m. $75/person. Book at...