Карты - Maps для Heroes 3

So, what's the deal with Jedy Story? There's only one piece left, the last castle. I need to find the vulnerability sphere to get past the border guard. Does anyone know where the sphere is located? Are there any kind souls who can help?

I checked – the vulnerability medal is located at point 52, 45, 0 (at the top), on a small island between the mountains. It's hidden so well that you can't even see it, but there seems to be a passage. You either need to swim, making a transfer on land and summoning a boat, or fly. I haven't checked more precisely.