Thank you for your responses; I value them both. I would be looking at about 10 feet high but would like to plant the ridge (if that is what it is called) to plant evergreen shrubs or something. I do not know about fungal filters, I looked it up elsewhere on the site but don't understand how it applies to Hugelkulture.
I am still figuring out how to navigate this site so thank you for your assistance in moving my question to a larger forum.