Indoor visitor attractions, but a small number of underground visitor attractions will remain closed for the time being because of the higher risks associated with these environments.
Atyniadau i ymwelwyr dan do, ond bydd nifer o atyniadau tanddaearol yn parhau i fod ar gau ar yr adeg hon oherwydd y risgiau uwch sy’n gysylltiedig â’r amgylcheddau hyn.