Sandbar
=======

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

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