Very cool! Viewing via heli is spectacular isn't it? Since you mentioned the donkey/mule ride I'm guessing you went to the Hidden Ranch at the bottom.
Here's a cool post by PuristS 'watchguy' you might be interested in: timeout.watchprosite.com
/
PuristS 'flamenco' has posted sites around Beijing from a more local persepctive: timeout.watchprosite.com
and during winter time: timeout.watchprosite.com
/
'small-luxury-world' had a interesting comparo: timeout.watchprosite.com
/
Traveling via highspeed train with PuristS 'Stefan': timeout.watchprosite.com
/
As for the Great Wall here is a visit I made last year:
timeout.watchprosite.com
0/
-MW
This message has been edited by DRMW on 2013-08-02 13:17:53