Dank Tunnels
============

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