Catacombs
=========

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

+-- Ground level ---------------------+
|         ^                           |
|         %           *               |
|         |           |               |
|         |           |               |
|      *--*--*@-*--*--*@-*            |
|         |              |            |
|         |              |            |
|         *              *--*@-*      |
|         @              |     |      |
|         |              |     |      |
|         *        *--*@-*     *      |
|         |        |           |      |
|         |        |           |      |
|         *--*     *           *      |
|         @        @           |      |
|         |        |           |      |
|         *        *     *--*@-*      |
|         |        |     |            |
|         |        |     |            |
|         *  *--*--*--*@-*            |
|         |     @  |     |            |
|         |     |  |     |        ^   |
|      *--*@-*--*  *     *--*@-*--%   |
|         @     |  @           |      |
|         |     |  |           |      |
|         *--%  *  *           *      |
|         |  |v |  |           |      |
|         |  |  |  |           |      |
|         *--*  *  *--*        *      |
|                                     |
+-------------------------------------+

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