In the Midzone, I once was lucky enough to obtain the Trojan Ruin Map from the Grimm Monster; it is a map of one of the seven Regions of the Trojan Ruin.
Though the map is for Golden Elite and there would not be much useful Platinum and Diamond, It is still a map from Grimm Monster. The Trojan Ruin is not fully explored yet, so every map mattered, especially when it is from the enemy.
But what's the use? It's not like I could go, I'll just have to give this map to my friends; it might turn out to be very useful to them.
To be honest, I was very much looking forward to this ruin, this is a very dangerous ruin but also very fruitful. Those who were able to return from it came back with big improvements, and those who were lucky came with huge improvements, they advanced beyond their imagination.