/usr/share/vim-scripts/sokoban-levels/level68.sok is in vim-scripts 20130814ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#@ # # #
## ### ## #### # ##
# # # $$ #
# # # # $ # $ ## ##
# $ # #$$ # #
# ### # ## ##
#..#.# $ # $ # #
#..#.# $ # ## $$ #
#....## $$ $ # #
#.....## # #
####################
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