Such sites may vary in size and in the extent to which the land has been ‘developed’ with roadways, distinct plots, hard-standings, amenity blocks etc.
Gall safleoedd o'r fath amrywio o ran maint ac i ba raddau y mae'r tir wedi'i 'ddatblygu' gyda ffyrdd, lleiniau penodol, safleoedd caled, blociau amwynder ac ati.