Best mountain peaks around Llanidloes Without are located within the Cambrian Mountains of Mid Wales. This area provides access to several notable mountain peaks, known for their remote beauty and diverse ecosystems. The region features challenging trails and serene landscapes, offering true mountain scenery with hidden lakes and valleys. It is a significant source for several rivers, including the Severn and the Wye.
Last updated: May 6, 2026
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Pumlumon Fawr, often referred to simply as Pumlumon, is the highest peak in the Cambrian Mountains of Wales, standing at 2,468 feet (752 meters) above sea level. It is located in the county of Ceredigion and is part of a range known for its rugged terrain and scenic beauty. The name "Pumlumon" translates to "five peaks" in Welsh, which refers to the five summits that make up the mountain. The area is popular with hikers and outdoor enthusiasts, offering a variety of trails that provide stunning views of the surrounding countryside, including lakes, valleys, and other mountain ranges. Pumlumon is also notable for its rich biodiversity and unique ecosystems. The region supports various wildlife, including rare plant species and birds. Additionally, the mountain is a source of several rivers, contributing to the hydrology of the region. Whether for hiking, nature watching, or simply enjoying the landscape, Pumlumon Fawr is a significant and cherished feature of the Welsh landscape.
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Wonderful view with several lakes and to the sea.
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The second highest summit in the Pumlumon range, Pen Pumlumon Arwystli lies just to the south of the source of the River Severn, the longest in the UK. It boasts a glorious panorama, with views as far as Southern Snowdonia's Aran Fawddwy on a clear day. The top is adorned by a trio of large cairns.
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Third highest summit in the Pumlumon range, Pen Pumlumon Llygad-bychan is perhaps most notable for its proximity to the source of the River Wye. To the north of the summit is the lovely pool of Llyn Llygad Rheidiol, while Pumlumon's principal summit is just a short walk along the Cambrian Way to the northeast. While the summit itself is not particularly distinguished and is known to be on the boggy side, it does offer lovely views across the Cambrian Mountains of Mid Wales.
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Pen Pumlumon Llygad-Bychan (727m, a Hewitt & Nuttall) is the third highest summit on the Plynlimon massif. The summit is boggy and marked by a few stones. The source of the River Wye, is just South of the summit. The picturesque glacial lake of Llyn Llygad Rheidiol lies to the North.
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Mike Peters of pop punk band The Alarm wrote one of his top tunes whilst doing this walk! Shine on you crazy miner
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A beautiful part of Mid Wales that is often over looked. Stunning remote landscape of great beauty without the crowds of the more popular peaks.
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The mountain peaks around Llanidloes Without, nestled within the Cambrian Mountains, are known for their remote beauty, rich biodiversity, and stunning vistas. This area is often referred to as the 'Green Desert of Wales' due to its wild and empty plateau, offering true mountain scenery, hidden lakes, and deserted valleys away from more crowded regions.
For expansive panoramic views, Pumlumon Fawr summit is highly recommended. As the highest point in Mid Wales, it offers awe-inspiring vistas over the rugged highland scenery of the Cambrian Mountains. Pen Pumlumon Arwystli also boasts a glorious panorama, with views extending as far as Southern Snowdonia on a clear day.
Yes, the region is notable for being the source of several major rivers. The source of the River Severn, the longest in the UK, lies just south of Pen Pumlumon Arwystli, while the source of the River Wye is located near Pen Pumlumon Llygad-Bychan summit. Additionally, the picturesque glacial lake of Llyn Llygad Rheidol can be found north of Pen Pumlumon Llygad-Bychan.
The area around Llanidloes Without is ideal for diverse outdoor activities. Hiking is very popular, with options ranging from easy strolls to challenging mountain ascents. Mountain biking is also a fantastic way to explore the rugged terrain. You can find more details on specific routes in our guides for Hiking around Llanidloes Without and MTB Trails around Llanidloes Without.
Absolutely. Peaks like Pumlumon Fawr, Pen Pumlumon Llygad-Bychan, and Pen Pumlumon Arwystli offer challenging hikes within the Plynlimon massif. These routes often involve significant elevation gain and varied terrain, providing a rewarding experience for experienced hikers. Y Garn Summit is also part of longer, challenging routes exploring the Plynlimon range.
Yes, there are options for easier walks. Bryn y Fan Summit offers an easily accessible summit suitable for shorter hikes with moderate elevation gain. Yr Allt Summit can also be reached via a loop path from Pen-Y-Gaer, providing an easy hike. For more options, explore our guide on Easy hikes around Llanidloes Without.
The Cambrian Mountains, particularly around Pumlumon Fawr, boast rich biodiversity and unique ecosystems. The region is known for supporting rare plant species and various wildlife, including the majestic red kites, which are often seen soaring above the peaks.
Visitors frequently highlight the remote and unspoiled nature of the landscape. The lack of crowds, stunning panoramic views, and the opportunity to experience true wilderness are often mentioned. Many appreciate the ecological importance of the area, especially as a watershed for major rivers, and the chance for nature watching.
Yes, there are several recommended hiking routes. For a moderate challenge, consider the 'Hafren Cascades Boardwalk – Hafren Forest Boardwalk loop from Rhyd-y-benwch'. Easier options include the 'Clywedog Dam – Yr Allt Summit Path loop from Pen-Y-Gaer' and the 'Bryn y Fan Summit Trig Point – Bryn y Fan Summit loop from Bwlch y Gle Dam'. You can find more routes in our Hiking around Llanidloes Without guide.
Pumlumon Fawr is particularly significant for its ecological importance as a major watershed. It is the source of several rivers, including the Severn and the Wye, and its slopes support diverse natural habitats and unique ecosystems, making it a vital area for biodiversity.
The mountain peaks in Llanidloes Without offer remote beauty year-round. However, for drier conditions and clearer paths, late spring to early autumn (May to September) is generally ideal, as some areas, particularly summits like Pumlumon Fawr and Pen Pumlumon Llygad-Bychan, can be boggy. Experienced hikers might enjoy the challenge of winter conditions, but appropriate gear and preparation are essential.
Yes, the area features beautiful water bodies. The picturesque glacial lake of Llyn Llygad Rheidol is located north of Pen Pumlumon Llygad-Bychan summit. This lake, though naturally formed, has been dammed and is a stunning feature in the rugged scenery.


See even more amazing summits around Llanidloes Without with these guides: