An unusual sight of rail tracks going into Lake Tahoe at the Ed Z'Berg Sugar Pine Point State Park near Tahoma, California.  The tracks were used to launch boats on the lake from their storage facilities inland starting in the early-1900’s.

As the wealthy began to settle and build vacation homes in the Tahoe areas in 20th century, they needed a way to keep their boats safe when they weren’t in the water or during the snowy winter season. They would build large garages to house the boats and used the tracks to transport them into the lake.

From: https://www.activenorcal.com/why-are-there-old-train-tracks-going-into-lake-tahoe/#:~:text=These%20tracks%20that%20sit%20all,starting%20in%20the%20early%2D1900's.