What's the log lying on top of?
The log is lying on top of the rock.
    src         edge_attr  dst
0     1   to the right of   15
1     2    to the left of   17
2     2   to the right of    6
3     2    to the left of    5
4     2   to the right of   12
5     4   to the right of    9
6     4   to the right of   14
7     4   to the right of   12
8     4   to the right of    6
9     4    to the left of   17
10    5   to the right of    2
11    5    to the left of   17
12    6    to the left of    9
13    6    to the left of    2
14    6    to the left of    4
15    6    to the left of    8
16    6    to the left of   11
17    8   to the right of   12
18    8   to the right of    9
19    8   to the right of   14
20    8   to the right of    6
21    9    to the left of    4
22    9   to the right of    6
23    9    to the left of   11
24    9    to the left of    8
25   10   to the right of   14
26   10    to the left of   16
27   10   to the right of   12
28   11   lying on top of    2
29   11   lying on top of   17
30   11   to the right of   12
31   11   to the right of    9
32   11   to the right of    6
33   12    to the left of   10
34   12    to the left of    4
35   12    to the left of    2
36   12    to the left of   15
37   12    to the left of   16
38   12    to the left of   11
39   12    to the left of    8
40   12  standing next to    4
41   14    to the left of   10
42   14    to the left of   15
43   14    to the left of    4
44   14    to the left of    8
45   15    to the left of    1
46   15   to the right of   14
47   15   to the right of   12
48   16   to the right of   10
49   16   to the right of   12
50   17   to the right of    5
51   17   to the right of    2
52   17   to the right of    4