If this topic has been asked and answered, please accept my apologies and please point the way.
Before I opened the "Mysterious Courses" thread, I thought/hoped it would be about something different, namely still-extant courses that have changed over the years but have clear evidence of past versions.
I doubt I can explain why, but I get a deep thrill out of spotting old tee pads, abandoned fairways, fallen bridges, etc.
An example from my neck of the woods might be an old Langford fairway corridor to the right of what's now #13 at Harrison Hills. The expansion to 18 holes left the original course mostly intact, but if you look back and to the right 2/3 down the fairway, you can see the old version still sitting there, just waiting for a bushhog or a machete.
For me, the key to that spot, and others like it, is that there's little attempt to deeply camoflauge the past. It's still there, hiding in plain sight.
Interested in other examples, if anyone has a mind to share.
Thanks.