That tiger was thinking outside the bun and ran for the border.
assuming a 7” riser on the steps, it would seem that the “stalagmite” at 2:00 is only 8’ - 9’ tall - with another half leap to the top - a total of 12’
Then it seems it could have ran across the top to the left and onto the pedestrian area.
You are right! The other 3 walls look very questionable especially the back wall.