Gouged Tunnel (2)
=================

+-- Ground level -----------------------+
|                                       |
|               *                       |
|               |                       |
|               |                       |
|               *        *              |
|              / \      / \             |
|             /   \    /   \            |
|      *     *     *--*     *--*        |
|     / \   /|         >        \       |
|    /   \ / |                   \      |
|   *     *  *  *                 *     |
|   |       /    \                |     |
|   |      /      \               |     |
|   *     *        *  *           *     |
|   |     |        | / \         / \    |
|   |     |        |/   \       /   \   |
|   *     *        *     *--*--*     *  |
|    \   / \       |        |        |  |
|     \ /   \      |        |        |  |
|      *     *--*--*        *        *  |
|     /      |     |        |       /   |
|    /       |     |        |      /    |
|   *        *  *--*        *--*--*     |
|           /      |       /            |
|          /       |      /             |
|         *        *--*--*              |
|          \      /                     |
|           \    /                      |
|            *--*                       |
|                                       |
+---------------------------------------+