Sometimes it is harder to name a work than to paint it!

.... this is a case in point.... the social conscience type works are easy for me because I already know the emotion or message I want them to convey, but I find ones like this seem so difficult ... the descriptive names seem a bit lame... trees, forest, waterfall. Moods might be a bit twee... serenity, the awesomness of nature etc... so, any suggestions?

sentinals.  mixed media on canvas. 1200x900mm

(PS. thanks to my facebook friends who came up with some good suggestions, I particularly liked Esme Goosen's idea and have called it "sentinals")