Dynamically allocated array of structs

How do I properly access the members of a dynamically allocated array of structs?

My struct:

struct wumpusWorldCell{
char state;
bool wumpus;
bool gold;
};


My class:

class wumpusWorld{
wumpusWorldCell **cave;
...
};


My constructor that creates the array:

wumpusWorld::wumpusWorld(int m, int n){
cave = new wumpusWorldCell* [m];
for(int i = 0; i < m; i++)
   cave[i] = new wumpusWorldCell [n];}


My member function that attempts to access the struct:

void wumpusWorld::initializeWumpusWorld(int m, int n){
for(int i = 0; i < m; i++)
   for(int j = 0; j < n; j++)
       cave[m][n].state = '?';
return;}

All code compiles and links just fine.  The program crashes on the line "cave[m][n].state = '?';".  What am I missing or not understanding?
CABrownAsked:
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AlexFMCommented:
   for(i = 0; i < m; i++)
        for(j = 0; j < n; j++)
            cave[i][j].state = '?';


cave[i][j] and not cave[m][n]
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CABrownAuthor Commented:
Thanks for pointing out what should have been obvious to me!  I should have just gotten some rest first!  Thanks!
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