I really don't know if this is the biggest island in Busse Woods or not, but I do know it now has another cache on it for you to find.
The cache was placed near the end of winter when all the vegetation was dead, this made for an easy cache placement for me. I suspect that making the find during the summer months maybe a bit tougher.
You are looking for a small camo'ed container.
Good luck, stay safe and have fun on the island!
Don't you just love island caches?