Whilst heritage crime can take many different forms, there is specific legislation in place which makes it an offence to undertake certain activities on historic sites.
Er bod sawl math gwahanol o droseddau treftadaeth, mae deddfwriaeth benodol ar waith sy'n ei gwneud yn drosedd i rywun ymgymryd â gweithgarwch penodol ar safleoedd hanesyddol.