Is there either any tall grass or snow?
No, there is grass but it is short.
    src        edge_attr  dst
0     1  to the right of    6
1     2  to the right of    9
2     2   to the left of    6
3     3   to the left of    5
4     4  to the right of    9
5     4   to the left of    6
6     5  to the right of    3
7     6  to the right of    2
8     6   to the left of    1
9     6  to the right of    7
10    6  to the right of    4
11    7   to the left of    6
12    7  to the right of    9
13    8  to the right of    9
14    9   to the left of   10
15    9   to the left of    4
16    9   to the left of    2
17    9   to the left of    8
18    9   to the left of    7
19   10  to the right of    9