Which place is it?
It is a walkway.
    src        edge_attr  dst
0     0  to the right of   10
1     1  to the right of   14
2     1  to the right of   12
3     2   to the left of   11
4     4  to the right of   10
5     6  to the right of   14
6     6  to the right of   12
7     7  to the right of    8
8     8   to the left of    7
9     9   to the left of   11
10   10   to the left of    0
11   10   to the left of    4
12   10   to the left of   11
13   11  to the right of    2
14   11  to the right of    9
15   11  to the right of   12
16   11  to the right of   14
17   11  to the right of   10
18   12   to the left of   11
19   12   to the left of    1
20   12   to the left of    6
21   13  to the right of   14
22   14   to the left of    6
23   14   to the left of   13
24   14   to the left of   11
25   14   to the left of    1