The Top 20 Natural Monuments in Monmouthshire
Monmouthshire’s landscape is a beautiful place to explore — something that you can best experience by visiting one of our 20
beautiful natural monuments in Monmouthshire. To help you find the one for, you can see all the details you need to explore the best natural monuments, and better plan your next outdoor adventure!
beautiful natural monuments in Monmouthshire. To help you find the one for, you can see all the details you need to explore the best natural monuments, and better plan your next outdoor adventure!
Last updated: November 6, 2025
Blorenge summit
Highlight • Natural Monument
From the summit of Blorenge you get fine views over Abergavenny and the Usk Valley. You may just be able to make out the castle ruins in Abergavenny, not too …
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Skirrid Fawr summit
Highlight • Climb
Skirrid Fawr is an iconic little mountain on the edge of the Brecon Beacons National Park. Just across the valley from the Sugar Loaf and the Blorenge. All in all …
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Sugar Loaf Summit
Highlight • Summit
Mynydd Pen-y-fâl, to give Sugar Loaf its original Welsh name, is not a big hill. But because it stands separated from any other peak, including its brethren of the Black …
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Keeper's Pond (Pen-Ffordd-Goch Pond)
Highlight • Natural Monument
Keeper's Pond (Pen-Ffordd-Goch Pond) boasts great views across the Usk Valley towards the Sugar Loaf and the Black Mountains. Within the Blaenavon World Heritage Site and the National Park, it's …
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Sugarloaf Summit on the Cambrian Way
Highlight (Segment) • Trail
The Cambrian Way is an iconic long-distance footpath that runs 298 miles (480 km) from Cardiff in the south to Conwy in the north. That distance comes with a challenging …
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Offa's Dyke Path
Highlight • Trail
Offa's Dyke (Welsh: Clawdd Offa) is a large linear earthwork that roughly follows the current border between England and Wales. The structure is named after Offa, the Anglo-Saxon king of …
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Giant's Cave, Wye Valley
Highlight • Cave
There are a couple of caves in this area. The first (coming from Chepstow) is very shallow and raided above the path.
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View from Eagles Nest
Highlight • Trail
Eagles Nest is situated at the top of a steep, wooded limestone cliff and as the highest point on the Monmouthshire bank of the Wye, at 770 foot (235 m). …
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Otter Hole Cave
Highlight • Natural Monument
Otter Hole / Otter Cave is known as one of the best "decorated" caves in the UK. Access is restricted to protect the rare formations inside. The cave also floods, …
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View of Hatterrall Hill and the Black Mountains
Highlight • Viewpoint
Hatterrall Hill is a rounded peak in the Black Mountains which sits on the Wales-England border, partly in Monmouthshire, Wales and partly in Herefordshire, England. Its summit at 531m is …
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Extend your search for the best caves by checking out these guides of the top ones in Monmouthshire:
CrayYstradfellteMaescarLlywelTawe-UchafThe Vale Of GrwyneyLlanfrynachYstradgynlaisLlangynidrCrickhowellPembrokeshireOnllwynResolvenBlaengwrachGlynneathCymer And GlyncorrwgSeven SistersLlanveynoeLlangattockGlyn TarellLlanfihangel Cwmdu With Bwlch And CathedineTalybont-On-UskBreconSwanseaTrallongLlangorsYscirTalgarthGwernyfedBronllysLlanddewLlanrhidian LowerLlanigonIlstonLlanrhidian HigherPenricePort EynonReynoldstonFelin-FachLongtownCraswallPennardRhossiliLlangennith, Llanmadoc And CheritonMichaelchurch EscleyUpper KillayCarmarthenshireHonddu IsafCrynantGowertonAbersychanBishopstonMumblesBedwas Trethomas & MachenCockettVale of GlamorganCaerphillyVanRudryBlaenavonLisvaneLlanbradachRhiwbinaCwmllynfellMaesycwmmerPontardaweYstalyferaPentyrchPenyrheol Trecenydd & EnerglynRadyr and MorganstownWhitchurchPontprennauWalterstoneTongwynlaisAber ValleyPeterchurchGelligaerHeathSt. MargaretsPengamCeredigionNewtonSkettyKillayDunvantCefn FforestArgoedAbbey DoreNelsonPelennaVowchurchTurnastoneCilybebyllPontllanfraithLlancilloCyncoedLlandaff NorthCathaysLlanishenPentwynOld St MellonsNeath Port TalbotBrynCrumlinBlackwoodPenmaenRhondda Cynon TafPen TranchRowlstoneYnysdduGwaun-Cae-GurwenBargoedBactonMargamClyne And MelincourtLlwchwrUplandsTownhillCastleCwmavonDulasNewbridgeAbercarnRisca WestRisca EastHenllysMargam MoorsRoathPenylanMawrGwynfi And CroeserwEwyas HaroldNeathBriton FerryLlanwrtyd WellsTenbyNew InnTrevethinFairwaterPenderryCrosskeysCoedffrancDyffryn ClydachCardiffTonnaBlaenhonddanTai-BachAberavonSandfields EastPort TalbotKentchurchCaerphillyPontnewyddLlantarnamPonthirUpper CwmbranCwmbran CentralPontymoileLlanyrafonCroesyceiliogBon-Y-MaenSt. ThomasLandoreCwmbrwlaBaglan BayBaglan MoorsSandfields WestBaglanKenderchurchMynyddbachBirchgroveLlangyfelachClydach
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