ICEWALL:

                   O
                  /
               O O
               |/
               O
              /|
             O O
              \|
               O
                \
                 O
                 |
                 O
                  \
                   O-O-O   O-O
                   | |  \ /|
               O   O  \  O-O-O
              / \ /    |/|   +
           O-O   O    SD O.  D
          /               O  :
         O                   :
         |              O    :
         |             / \   :
         O            /   O  U           
        /   to       /   /   +
       O  castle    O   O-O--O D                    O-D
        \   :       |     |   \:                    : :
         O--U-O-O-O-O     O    U   O+O+--waterfall-+O O
            |      /     /      \ /                   |
            |     O-----O        O          O-O-O-O+O |
            |            \                         /  |
            |             SD                  O O-O   O
            |  Vm                              \|/    +
            |  :                            O-O-O---O-O-O-Tr
            |  UD                              /|\          \
            |  :                              O O O          O-Bl
            U..:                                |  \
                                                |   O
                                                |   |\    
                                                O---O-O        



 Vm - Griffon transport to Vingaard Mountains                       
 Tr - Trigger, blocks exit west!
 Sd - Snowdrift                                                         
 Bl - Frozen block with dragon


 Castle:

 lvl 2:            O-O-O+O+?
                     | |
                   O-O O   O
                       |   |
                     O-D-O-O
                        

                                 O
 lvl 1:          O     O+O-O     |
                 |     |       O-O-O
                 O--O--O--O--O   |
                 |     |     | O-O+O
                 O   O-U-Fo  D   |
                       |     :...U
                       D      
                       :
                      UD
                       :
                      UD
                       :
                      -U-
                       |


 Fo - Food