The Roman Map of Britain Ptolemy's Geography

Geography II 3.14 Adjacent islands MAP

Islands lie near that of Alvion: near Orcas promontory,

. .

 Scetis island

3240' 6045'

 Dumna island

30 6120'

above which are the Orcades islands, about thirty in number, of which

. .

the middle point is

30 6140'

and yet above them is Thule island of which the western point is

29 63

the eastern point

3140' 63

the northern point

3020' 6315'

the southern point

3020' 6240'

the middle

3020' 63

Near the Trinoantes are these two islands

. .

Toliatis island

23 5420'

Counnus island

24 5430'

Below the Great Harbor is the island Vectis, of which the mid-point is at

1920' 5220'