Massive Dark Tunnels
====================

+-- Level +1 ------------------------------------+
|                                                |
|                              M     M           |
|                               \    |           |
|                                \   |           |
|                              *--*--*           |
|                                 |  |           |
|                                 |^ |           |
|                           %--*  %  *  *        |
|                           v /| / \   /|        |
|                            / |/   \ / |        |
|                           M  *     *  M        |
|                                    |           |
|                                    |           |
|                                 M--*           |
|                                                |
+------------------------------------------------+

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