Repost from what I put over on the WDW side of the site-
WELP... lets see what we have here.... per THIS design-
1) This appears to be the entrance into the load/unload building/area. It may or may not be modeled after the Old Faithful Inn at Yellowstone. Judging by the geysers in the image toward Big Thunder, this is likely the inspiration.
2) This is the start area (beginning of the ride).
3) This is the area where the vehicles proceed over a bridge and 'plunge' downward swooping counterclockwise underneath the bridge as seen in this released artwork. Note the artwork shows much more open space beyond the bridge vs the overall layout image which suggests the cars head inside a rockwork building underneath the overlying track prior to the bridge-
4) Vehicles exit the small (maybe?) showbuilding here.
5) Vehicles seem to proceed to climb up the mountain (on the east side (side facing the ~hub)) and crest to drop down the opposite side (facing Tiana) as seen in this released artwork (right side background). Note from here the path gets lost in the overall layout image... the vehicles could snake into a showbuilding inside the mountain or may just drop down into a path (somewhere between the
?'s possibly going through water as shown in the image below)... who knows.
6) The vehicles eventually appear to make it over here. It's unclear what exactly goes on in this version of the attraction if it has bridges (goes above or under walkways to Big Thunder/Tiana). The vehicles do appear to dodge geysers along the way and swoop their way around area
B. Could have a neat erupting geyser line chasing the vehicles...
7) The finish line 'end' of the ride as seen in this released artwork. This is where Disney proclaims "everyone is a winner today!" but loser guests will secretly never let it down... they know they suck... and so does everyone else on the winning vehicle...
A) This is the entrance path to the ride from the new 'perimeter' path if you will. I assume it's a in/out path as the ride seems to surround the entire central area.
B) This area is interesting... it's a building (I'd think gift shop)... surrounded entirely by the finishing turns of the ride... and there are a bunch of little Guidos seemingly around campfires or something on one side of it... a blue sky concept for a Guido spinner ala Mater's at DCA? Perhaps just character filled artistic filler... hmmm...
C) This path heads off into the 'beyond big thunder area'... possibly off to Villainsland with an eventual loop connection to Fantasyland in the distant future I'd guess.