+-- Level +1 ----------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
+----------------------------------------------------------------------------------+
+-- Ground level ------------------------------------------------------------------+
| |
| M |
| / |
| / |
| * |
| / |
| / |
| * |
| / |
| ^ ^ / |
| * *--*--*--* |
| \ | \ |
| \ | \ |
| * * * |
| \ | \ |
| \ | \ |
| * * * |
| \ | \ |
| \ | \ |
| * * * |
| \ / \ |
| \ / \ |
| * * * |
| \ / |
| \ / |
| * * |
| \ / |
| \ / |
| * |
| / |
| / |
| M * * |
| \ / / |
| \ / / |
| * * * * |
| \ | \ / |
| \ | \ / |
| * * * * |
| \ | \ / |
| \| \ / |
| * * * |
| / | / |
| / | / |
| * * * * |
| \ / | / |
| \ / | / |
| * * *--*--*--*--*--*--*--* |
| \ | / | \ |
| \ | / | \ |
| *--*--* * * * |
| / \ / | \ |
| / \ / | \ |
| * %--*--*--*--* * *--* |
| < v \ \ |
| \ \ > |
| *--* * * |
| / \ \ | |
| / \ \ | |
| * * * * |
| / \ \ | |
| / \ \ | |
| * * *--*--*--* |
| | | / | |
| | | / | |
| * * *--* * |
| /| | / | |
| / | | / | |
| * * * * * * |
| \ / | | / |
| \ / | | / |
| * * * *--*--*--*--* * |
| \ / | / |
| ^ \ / | / |
| *--% *--* * * |
| | / \ | / \ |
| | / \ | / \ |
| * * * * * * |
| | / | / \ / \ |
| &/ | / \ / \ |
| * * * * * M |
| | / \ / |
| | / \ / |
| * * * * |
| | |
| | |
| * |
| / \ |
| / \ |
| * * |
| / \ |
| / \ |
| * * * |
| / \ | |
| / \ | |
| * * * |
| / \ | |
| / \ | |
| * *--* |
| v v |
| |
+----------------------------------------------------------------------------------+
+-- Level -1 ----------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
+----------------------------------------------------------------------------------+