Good thinking OFG.

I had noticed the orange tribal mat before but just thought of it as the start mat. Perhaps it is also the finish mat as well.

This must be when they first start the chal...they are all bunched together with Greg and Troy still waiting for directions from Bill, their 'Caller'.
Note that Jonas' shirt clearly shows the patterns and has 'color' showing b/c it is dry at the start.
And also note the rope stretching across behind them.

Then later in the series we see Jonas and Leif back again at the mat area, only this time Jonas' shirt is very dark...b/c it is wet. Leif is standing somewhat separate from Jonas and far enough away that they *could* be unhooked? Jonas appears to be trying to find the red/orange puzzle bag dropped(?) on the ground? Are Leif and Jonas done with their task? While they still have their blindfolds on, they might have to wait blindfolded until all the pairs have finished their tasks and returned to the mat...then are able to take their blindfolds off.
Note the location of the blue tribal banner to their left and the location of Colton/Jay as sitouts and also the rope stretching across behind Jonas.

Now compare those locations(Colton/Jay sitouts) & blue tribal banner) with the celebration pics. They look as tho they tend to match up to the same w/re to that mat location.
Note the rope stretching across in front of the gals celebrating....and Sabrina appears to be on the other side of the rope barrier. Appearing to be returning to celebrate w/her tribemates after successfully completing the puzzle?

And finally...putting it all together...while I can't see the 'finish' the rope in front of Troy and Michael b/c it is low and the pic is a close up, I believe they are standing w/blindfolds off on their initial start and finish mat on one side of the rope watching while their Caller(Bill), out of frame, attempts to solve the puzzle on the rope's(unseen in this pic) other side.
Just as OFG and FloPo have speced above.