In that regard, @rummy, I've been thinking a few things.
1) I can confidently match the two photos taken by @Theme Park Girl to the satellite photo. The full versions of her pics give triangulation points: The fence that is indented around a support footing outside of the fence, and the rocky drain outside the front fence (both circled orange and pointing in the direction of her photos). The rectangular concrete footings are the giveaways.
Also, looking at Flash, the turnaround's supports get wider the higher it goes and turns. This would lead me to think the turnaround is a mirror of Flash's (therefore clockwise on the satellite photo), but the current track isn't marrying up to that unless it makes a tight left hand turn. Currently it's making a right hand twist above the orange machinery...