2D数组索引超出界限异常

I am new to 2D Arrays, and while I think I understand it, I am unsure why I am getting this Index Out of Bounds Exception. I tried making the map size 70x100, and I still received the same error. It seems to think I am searching for the index -1156638823, which I do not understand why. Any help would be appreciated!I am new to 2D Arrays, and while I think I unde