There are more than 5 mountains in Wales. The highest is
Snowdon, or Yr Wyddfa to use the correct welsh name. The massif of
which Snowdon is a part, in North Wales, is known as 'Snowdonia' in
English and 'Eryri' (meaning 'place of the eagles') in Welsh.
Snowdonia is a National Park. The Snowdon group are known as 'the
Snowdon horseshoe' and comprise Snowdon, Grib Goch, Grib y Ddysgl
and Y Lliwedd. Then there are the Glyders, whose main tops are
Glyder Fawr, Glyder Fach, Tryfan, Y Garn and Elidr Fawr. Then there
are the Carneddau - Pen yr Ole Wen, Carnedd Dafydd, Carnedd
Llewelyn, Yr Elen, Foel Frach, Garnedd Uchaf and Foel Fras. The
Moelwyn range include Moel Siabod, Moel Fawr, Moel Fach, Cnicht and
others.
Further south is the Brecon Beacons National Park, where there
are another four ranges. The highest mountain is Pen y Fan. Other
peaks in the Central Brecon Beacons include Corn Ddu, Cribyn, Fan y
Big. Then there are all the peaks in the Black Mountains to the
east, The Black Mountain and Fforest Fawr to the west and a number
of other significant peaks, such as Cadair Idris and Plynlymon and
ranges, such as The Caerwyns and the Rhinogs, throughout Mid Wales.
With the exception of the South Wales Coastal Plain most of Wales
is mountainous to some degree.
If you meant 'What are the 5 highest mountains in Wales the
answer would be, Snowdon (3560ft), Carnedd Llewelyn (3491 ft),
Glyder Fawr (3278 ft), Aran Ffawddwy (2976 ft), Pen y Fan (2907
ft),