Do the hills have green color?
Yes, the hills are green.
     src        edge_attr  dst
0      0  to the right of   13
1      0  to the right of   10
2      0  to the right of   25
3      0  to the right of   16
4      0  to the right of    2
..   ...              ...  ...
111   25   to the left of    2
112   25   to the left of    1
113   25   to the left of    0
114   25  to the right of   16
115   25   to the left of   10

[116 rows x 3 columns]