Cords: 18,34
First:
First i start at the beging of the tunnels and work my way through their is a total of about 30 snakes. the drop rate of the scales is about 17% (with skinning) and drop rate is about 7%.
Second:
The only tricky parts are that their is a 73 elite the pats through out. also you need a flying mount.
Picture:
PS: Sorry if this was posted before i searched for a good 5 mins and didnt find anything