I have confirmed that Lake Ere'Noru, which lies just above Allerian Stronghold, can be reached without flying mount or druid flight form. I made my way through Veil Shalas till I got to the entry point at coordinates 57,65. I mounted up with my epic mount and ran up the hill as far as possible then while still running up I repeatedly pressed the jump button. Though it seemed as though I wasn't moving, little by little I had made my way up and over that little hill and into the lake. Hope this helps out.

Snapdragon
67th season Hunter
Haomarush (PVP) server