Question: Of the larger islands of Scotland , what is the height in metres of the uninhabited island in the Yell Sound between the Mainland and Yell ?

text: List of islands of Scotland
Larger islands
This is a list of Scottish islands that either have an area greater than 40 hectares ( approximately 100 acres ) and/or are inhabited . The main groups , from Haswell-Smith ( 2004 ) , in many cases provide a more useful guide to location than local authority areas . These groups are : Firth of Clyde , Islay , Firth of Lorn , Mull , Small Isles , Skye , Lewis and Harris , Uists and Barra , St Kilda , Orkney , Shetland and Firth of Forth . In a few cases where the island is part of either a recognisable smaller group or an archipelago , or is located away from the main groups , an archipelago , local authority or other descriptive name is used instead . `` F '' designates a freshwater island . Scotland 's islands include thirteen Munros ( mountains with a height over 3,000 feet or 914.4 metres ) , twelve of them found on Skye , and a total of 227 Marilyns ( hills with a relative height of at least 150 metres , regardless of absolute height ) . [ 39 ] Orkney aerial photomap The Shetland archipelago Bressay Lighthouse at Kirkabister Ness , Shetland The Old Man of Hoy , Orkney , a 137-metre ( 450 ft ) sea stack of red sandstone Tobermory harbour , Isle of Mull The cliffs of Creag na Bruaich , Raasay Dhu Heartach Lighthouse , During Construction by Sam Bough ( 1822-1878 ) Fingal 's Cave , Staffa Kisimul Castle , Barra Ailsa Craig from the South Ayrshire coast Iona Abbey Shiant Islands Muckle Flugga lighthouse , Shetland Two of the Paps of Jura . Photo by John Shaw . The Earl 's Palace , Birsay , Orkney The cliffs of Eshaness , North Mainland , Shetland The Bass Rock from Tantallon Castle MV Isle of Lewis in The Minch Sula Sgeir from the south west Stornoway harbour , Lewis Fair Isle cliffs Callanish Standing Stones , Lewis Machair at Balephuil Bay , Tiree The east coast of Mousa towards the Peerie Bard Clisham , Harris An Sgurr , Eigg The rock pinnacles of the Quiraing , Skye
This is a list of islands of Scotland, the mainland of which is part of the island of Great Britain. Also included are various other related tables and lists. The definition of an offshore island used in this list is land that is surrounded by seawater on a daily basis, but not necessarily at all stages of the tide, excluding human devices such as bridges and causeways. [Note 1]
Scotland has over 900 offshore islands, most of which are to be found in four main groups: Shetland, Orkney, and the Hebrides, sub-divided into the Inner Hebrides and Outer Hebrides. There are also clusters of islands in the Firth of Clyde, Firth of Forth, and Solway Firth, and numerous small islands within the many bodies of fresh water in Scotland including Loch Lomond and Loch Maree. The largest island is Lewis and Harris which extends to 2,179 square kilometres, and there are a further 200 islands which are greater than 40 hectares in area. Of the remainder, several such as Staffa and the Flannan Isles are well known despite their small size. Some 94 Scottish islands are permanently inhabited, of which 89 are offshore islands. Between 2001 and 2011 Scottish island populations as a whole grew by 4% to 103,702. The geology and geomorphology of the islands is varied. Some, such as Skye and Mull are mountainous, while others like Tiree and Sanday are relatively low lying. Many have bedrock made from ancient Archaean Lewisian Gneiss which was formed 3 billion years ago; Shapinsay and other Orkney islands are formed from Old Red Sandstone, which is 400 million years old; and others such as Rùm from more recent Tertiary volcanoes.
Island Group Area ( ha ) Population Height ( m )
Ailsa Craig ( Creag Ealasaid ) Firth of Clyde 99 0 338
Arran ( Eilean Arainn ) Firth of Clyde 43,201 4,629 874
Auskerry Orkney 85 4 18
Baleshare ( Am Baile Sear ) Uists and Barra 910 58 12
Balta Shetland 80 0 44
Barra ( Barraigh ) Uists and Barra 5,875 1,174 383
Barra Head ( Beàrnaraigh ) Uists and Barra 204 0 193
Benbecula ( Beinn nam Fadhla ) Uists and Barra 8,203 1,303 124
Berneray , North Uist ( Beàrnaraigh ) Uists and Barra 1,010 138 93
Bigga Shetland 78 0 34
Boreray ( Boraraigh ) St Kilda 86 0 384
Boreray ( Boighreigh ) Uists and Barra 204 0 56
Bressay Shetland 2,805 368 226
Brother Isle Shetland 40 0 25
Bruray Out Skerries 55 24 53
Burray Orkney 903 409 80
Bute ( Bòid ) Firth of Clyde 12,217 6,498 278
Calf of Eday Orkney 243 0 54
Calbha Mor Edrachillis Bay 70 0 67
Calve Island Mull 72 0 20