The Black Valley is a place of outstanding natural beauty and a hiker's paradise. It is also known locally as Cummeenduff which is Irish for Black Valley. It is south of The Gap of Dunloe and north of Moll's Gap.
It holds the distinction of being the last place in Ireland to be connected to the national electric grid in 1976 and indeed has very poor mobile phone reception so don't rely on your cell phone to contact the other members of your party.
That said it is well worth visiting for its unspoiled natural vistas and hiking opportunities. Please be aware that the land is owned and actively farmed. Respect the farmer's rights, close gates, and 'leave no trace'.