Mae Llywodraeth Cymru wedi cyhoeddi rheolau newydd er mwyn achub bywydau ac atal y coronafeirws rhag lledaenu, gan gau llwybrau cyhoeddus a meysydd parcio.
They are designed to complement the new strict stay-at-home regulations and prevent a repeat of scenes last weekend when large numbers of people gathered on Welsh beaches, in parks and mountainsides.