These are the earliest pictures I took of the start of the pump track. You can see 3 existing rollers, I built these about a year earlier for my son to use with his PowerWheel 4 wheeler. I used the 3 rollers as the start to my track and added a berm first. I wasn't sure how to build the berm so just went for it.
Nice to have a backhoe to do the heavy lifting.
This is my son trying out the new berm on his 4 wheeler.