Which place could this be?
It is a field.
    src        edge_attr  dst
0     1   to the left of   17
1     1   to the left of   11
2     1   to the left of    6
3     2   to the left of   10
4     2   to the left of   14
5     3  to the right of   11
6     3   to the left of   18
7     3  to the right of   17
8     4   to the left of   12
9     6  to the right of    1
10    6  to the right of   13
11    7   to the left of    9
12    8  to the right of    9
13    8   to the left of   15
14    9   to the left of   15
15    9  to the right of    7
16    9   to the left of    8
17   10  to the right of    2
18   10  to the right of   14
19   10  to the right of   17
20   11  to the right of    1
21   11               on    6
22   11   to the left of   16
23   11   to the left of    3
24   12  to the right of    4
25   13               on   12
26   13   to the left of   17
27   13   to the left of    6
28   14  to the right of    2
29   14  to the right of   17
30   14   to the left of   10
31   15  to the right of    8
32   15  to the right of    9
33   16  to the right of   17
34   16               of    6
35   16  to the right of   11
36   17   to the left of    3
37   17   to the left of   14
38   17  to the right of    1
39   17  to the right of   13
40   17   to the left of   10
41   17   to the left of   16
42   18  to the right of    3