

Hello everyone,
after finally finishing Mardrachts castle today, I went back to the little hut infront of it with the guy and his wolves (didnt kill him).
Now I broke into his house to get behind it (which he didnt mind for some reason) and saw that there is an island or something across the river.
When I looked on the map, I saw that theres even a lootable box there, which means there needs to be some where to get there!
Now since my party was already level 5 I just cast fly on my paladin aaaand....couldnt fly over the water.
Nor could my Wizard teleport over there with misty step (probably too far?)
So my question is:
How the heck do I get over there? Does the Jump spell reach? Some other spell? Is it not accessible in EA?
Did anyone get over there?