Aesc is a unique vowel to the original anglo-saxon language. It has the sound “ae”
Anglo-Saxon Rune Poem (from ragweedforge.com)
The ash is exceedingly high and precious to men.
With its sturdy trunk it offers a stubborn resistance,though attacked by many a man
Aesc, the Ash tree, is the rune of the upper world, as some people might call Asgard. Personally, I just think of it as the top most branches of Yggdrasil. Like being at the top of any tree, there is more light present, and the height gives one perspective, a greater view of the land and world around them. It is an inspired perspective, which can lead to new thoughts and ideas, and also transform old information, because it helps to connect the pieces together. It can be a little intense, and sometimes the information that comes seems unrelated or obscure, but it usually falls into place after some time. So take a deep breath, look around and open see the bigger picture.