[PAR] [TLE] Silent Valley Reservoir [SEP] The Silent Valley Reservoir is a reservoir located in the Mourne Mountains near Kilkeel, County Down in Northern Ireland.  It supplies most of the water for County Down, surrounding counties and most of Belfast.  It is owned and maintained by Northern Ireland Water Limited (formerly DRD Water Service).  The reservoir was built between 1923 and 1933 by a workforce of over one thousand men, nine of whom died. [PAR] [TLE] Mourne Mountains [SEP] The Mourne Mountains ( ; Irish: "na Beanna Boirche" ), also called the Mournes or Mountains of Mourne, are a granite mountain range in County Down in the south-east of Northern Ireland.  It includes the highest mountains in Northern Ireland and the province of Ulster.  The highest of these is Slieve Donard at 850 m .  The Mournes is an Area of Outstanding Natural Beauty and has been proposed as the first national park in Northern Ireland.  The area is partly owned by the National Trust and sees a large number of visitors every year.  The name "Mourne" (historically spelt "Morne") is derived from the name of a Gaelic clann or sept called the "Múghdhorna".
[PAR] [TLE] Silent Valley Reservoir [ SEP ] The Silent Valley Reservoir is a reservoir located in the Mourne Mountains near Kilkeel , County Down in Northern Ireland . It supplies most of the water for County Down , surrounding counties and most of Belfast . It is owned and maintained by Northern Ireland Water Limited ( formerly DRD Water Service ) . The reservoir was built between 1923 and 1933 by a workforce of over one thousand men , nine of whom died . [PAR] [TLE] Mourne Mountains [ SEP ] The Mourne Mountains ( ; Irish : " na Beanna Boirche " ) , also called the Mournes or Mountains of Mourne , are a granite mountain range in County Down in the south - east of Northern Ireland . It includes the highest mountains in Northern Ireland and the province of Ulster . The highest of these is Slieve Donard at 850 m . The Mournes is an Area of Outstanding Natural Beauty and has been proposed as the first national park in Northern Ireland . The area is partly owned by the National Trust and sees a large number of visitors every year . The name " Mourne " ( historically spelt " Morne " ) is derived from the name of a Gaelic clann or sept called the " Múghdhorna " .
The Silent Valley Reservoir is located in a granite mountain range named after a Gaelic Clann named what ?
The Silent Valley Reservoir is located in a granite mountain range named after a Gaelic Clann named what ?
Múghdhorna
Múghdhorna