Mae'n wythnos ola' tymor yr Haf, ac mae 'na daith gerdded i Chwarel Cwmorthin - a rhamant ar yr amserlen i Isabelle a Dyfrig! Last week of summer term and there's a walk to Cwmorthin Quarry.
47 o funudau
Gweld holl benodau Ysgol Ni
