Which side of the image is the ladder on?
The ladder is on the left of the image.
    src        edge_attr  dst
0     0  to the right of    6
1     2   to the left of   14
2     2   to the left of   12
3     2   to the left of    6
4     2   to the left of   13
..  ...              ...  ...
56   15  to the right of    6
57   16  to the right of    6
58   16  to the right of   12
59   17  to the right of    6
60   17  to the right of   12

[61 rows x 3 columns]