GOV.WALES uses cookies which are essential for the site to work. Non-essential cookies are also used to tailor and improve services. By continuing to use this site, you agree to our use of cookies.
Definition: Pentwr o bridd ar gyfer plannu coeden neu blanhigyn ynddo, lle claddwyd twll gan ddefnyddio peiriant ac y gosodwyd y dywarchen ar ei gwaered wrth ymyl y twll.
Notes: Cymharer ag inverse mounding / twmpath wyneb i waered.