What is the ground full of?
The ground is full of rock.
    src        edge_attr  dst
0     0  to the right of   26
1     0   to the left of   14
2     0   to the left of    8
3     1   to the left of   15
4     2   to the left of   17
..  ...              ...  ...
95   27               of   19
96   29          full of    4
97   30   to the left of   13
98   30   to the left of   19
99   30   to the left of   18

[100 rows x 3 columns]