DanG wrote:

I would ask again what it is venting. I can sure be wrong--- just
ask my wife-- but I've not seen a septic tank with a vent other
than the roof top vents normal to the house. Is there a chance it
is something to do with a radon system? The candy cane is a great
illustration to use, and it sure is typical of some form of vent.
Speedy Jim could perhaps indicate whether or not a Studor type
vent would be adequate under the circumstances.

Does it lend itself to being buried in a decorative rock berm with
appropriate plantings?



Yes! I like the decorative effect!

No, a mechanical vent would defeat the purpose in this case;
the vent allows air to circulate and, maybe more important,
to permit large flows of water (toilet flush/washing machine draining)
to push the air ahead of it without restriction.

Jim