I believe that the red X's refer to choices you can make that you cannot turn back from. Choices where, no matter what you do, you will not reach the top level of the mountain and reach enlightenment.
I believe the black lines are possible paths - you can mess up, and get back on, through your karma, BUT if you make a major mistake (the red X's) you will not get back on the road to enlightenment at all.
Thanks for consideration.
I think Brain may be partially right because if you play close attention to the map hinting three items ufo, egg and the jetpack,you will notice that its drawn like a flow chart.And flow chart is all about decisions if if YES do this if NO do that ...but who knows.
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