I have lived in the same location, here in the central Sierra Nevada, and I haven’t been to this very local recreation spot. White Pines Lake has a logging museum, with plenty of stuff to see and ponder. For example, did this trailer have bunks, to hold the logs on the trailer?
They have some saws not all that old.
And others that are impressively powerful. Imagine the guy who hauls this beast with him all day long.
Here is how big logs were skid in the past. Yes, it was important to keep the leading edge of the log elevated, to reduce skidding damages.