At the top of Y Gyrn you get your first chance to admire the view before following a short descent to then begin the challenging climb up to Corn Du which can be seen in this photo.

The climb up to Corn Du is long, starts fairly steep and gets gradually steeper. The reward for this is a short rest, photo opportunity and then a descent before the climb up to the Pen-y-Fan, the highest point in southern Britain. The small lake which can be seen is the unpronounceable Llyn Cwm Llwch.

A fantastic view from Corn Du to Pen-y-Fan showing the saddle that the walker will drop into before another lung bursting climb.

A short, sharp descent leads to an initially gradual climb giving way to short and steep section leading to the top of Pen-y-Fan.

This shot shows the vastness and the beauty of the Brecon Beacons National Park. You can see also how exposed it sun, wind and rain.

The peaks are at such a height that looking down from them resembles looking at a map. Due to its remoteness, terrain and the weather, the park is used for military training. The Special Air Service (SAS) is known for holding especially demanding selection training exercises here such as the Fan dance (exercise). The infantry regiments of the British Army all train at Sennybridge, where NCO selection also takes place.

Following the ridge along the left (off shot) you will eventually travel parallel to the reservoir, cross it, climb the ridge on the far right of the picture and then begin the return.

People walking along the ridge appear as specs. Glaciers over successive ice ages carved out the dramatic scenery that can be seen today.