There are 25 letters/symbols in each "ball", dropping a hint that they might be linked. Two of them are indices into the triangle (which is which is indicated by the ranges [alpha..epsilon and alpha..iota] and by the lines). The third one are some arrows. We can interpret them as "go until the end" in the given direction. The +, sign tells us if we are to add or subtract the numbers on the way.
The position of the ant suggests to proceed from the inside out. Starting from the ant, stepbystep, look up a number in the triangle and add/subtract the numbers in the given direction until you hit the boundary. Finally, we get LION, GYMNASIUM AM ROTENBUEHL.
