Volcano
=======

+-- Ground level --------------------------------------------------------------------------------------------------------------+
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|   *--*     *     *     *     *  *  *--*--*     *--*                             %                                            |
|      |      \   / \   /     /  /              /                                 v                                            |
|      |       \ /   \ /     /  /              /                                                                               |
|      *        *     *     *  *           *--*                                                                                |
|     /        / \         /  #           /                                                                                    |
|    /        /   \       /  /           /                                                                                     |
|   *        *     *  *--*  *     *--*--*                                                                                      |
|   |        |     |  |      \   /                                                                                             |
|   |        |     |  |       \ /                                                                                              |
|   *--*  *--*     *?-*        *                                                                                               |
|      |  |            \      /                                                                                                |
|      |  |             \    /                                                                                                 |
|      *  *--*           *--*                                                                                                  |
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+------------------------------------------------------------------------------------------------------------------------------+

+-- Level -1 ------------------------------------------------------------------------------------------------------------------+
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|                           *  *--%                                                                                            |
|                           | ?   v                                                                                            |
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|               %     *--*  *                                                                                                  |
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+------------------------------------------------------------------------------------------------------------------------------+

+-- Level -2 ------------------------------------------------------------------------------------------------------------------+
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|                                                      %--*--*--*--*--%                                                        |
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|                              *--*--*                                                                                         |
|                             / ?     \                                                                                        |
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|                           *     *     *                                                                                      |
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|                           *     *#-M  *                                                                                      |
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|                           *     %     *                                                                                      |
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|                              *--*--*                                                                                         |
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+------------------------------------------------------------------------------------------------------------------------------+

+-- Level -3 ------------------------------------------------------------------------------------------------------------------+
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|                                                                     %--*--*--*--*--%                                         |
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+------------------------------------------------------------------------------------------------------------------------------+

+-- Level -4 ------------------------------------------------------------------------------------------------------------------+
|                                                                                    ^                                         |
|                                                                                    %--*--*--*--*--M                          |
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+------------------------------------------------------------------------------------------------------------------------------+

+-- Level -5 ------------------------------------------------------------------------------------------------------------------+
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|                                                                                             %  *--*           *--*--*        |
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+------------------------------------------------------------------------------------------------------------------------------+

+-- Level -6 ------------------------------------------------------------------------------------------------------------------+
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+------------------------------------------------------------------------------------------------------------------------------+

+-- Level -7 ------------------------------------------------------------------------------------------------------------------+
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+------------------------------------------------------------------------------------------------------------------------------+