I’ve seen the down pipe go straight into the ground in some photos of homes for resale. I wondered how it was done.

I found a few Youtube Videos. Simple to do but just a lot of digging, Need a pitch of about 1/2" per foot of pipe.

It's more of a problem if you have to go under a sidewalk.

From the 4 videos I watched generally you make a popup drain a 5-10 feet from the wall. In my case no sidewalks would be involved, just lots of dirt! Was at Lowes and parts would be under $25 per drain for 10' solid pipe and the couple connectors. Digging is what's stopping me. :)

My CYV has two going under ground out to street. I cleaned mine out first using my blower, undone the section, stuck the blower down the hold and EGO turbocharged it. Then I went to street racked up all the leaves, cleaned out under the grat which had some sand and rocks at bottom. My house 13 or so years old, I doubt it was even cleaned out.