I have never built a pond before but i am going to in the near future. I have looked at many pictures of pond that I do not like and have seen only a few that look natural.I understand that in some settings a pond and fall will never look natural with dirt built up behind a fall. My question is if you have a slope to work with can you bury the biofall so that only the part that shows is the area where the water comes out? My other question is can you have a smaller pond above in a flat area and then just pump water into that and then have a fall built so that when the top pond fills it will dump water down the fall into the larger pound on the bottom. This may seem like a stupid question but I am just trying to come up with some different ideas and would like some information if anyone has an opinion. thanks.