Editing Herm (section)

==Geography and geology==
[[File:Herm, Sark and Jethou.jpg|thumb|right|260px|An aerial shot showing Herm (centre), [[Jethou]] to the right, [[Sark]] in the right background and [[Guernsey]] in the foreground]]
Herm is only {{frac|1|1|2}}&nbsp;miles long (north-south) and less than half a mile wide (east-west).<ref name="Staff"/> In the northern part of the island are two hills, Le Petit Monceau and Le Grand Monceau. To the north of these is a common, leading to Mouisonniere Beach on the northern coast, with Oyster Point in the northwestern corner and La Pointe du Gentilhomme or Alderney Point at the northeastern corner.<ref name="map2">{{cite web|url=http://downloads.bbc.co.uk/history/domesday/maps/ci/3/53/54/ci.3.538000.5479000.1986.jpg|title=Herm map|publisher=BBC|date=1986|access-date=30 January 2014}}</ref> To the east of the common is Shell Beach and to the west is The Bear's Beach, leading down to the harbour.<ref name="map1">{{cite web|url=https://www.bbc.co.uk/guernsey/content/images/2008/04/10/walk_herm_map_470x352.jpg|title=Herm map|publisher=BBC|access-date=30 January 2014}}</ref> Half of the coastline of the northern part of the island is surrounded by sandy beaches; the southern half is rocky.<ref name="Map"/> Much of Herm's bedrock is [[granite]].<ref name="Dur">{{cite web | url=http://www.dur.ac.uk/herm.project/trenches/trench_b.html | title=Trench B | publisher=Durham University | access-date=30 December 2013}}</ref> In 2008, Adrian Heyworth, who was at the time the island's tenant, said that two or three metres of sand were being lost annually at Alderney Point.<ref name="Erosion">{{cite web | url=http://www.thisisguernsey.com/latest/2008/04/18/herm-struggling-to-stem-tide-of-erosion/ | title=Herm struggling to stem tide of erosion | publisher=The Guernsey Press | date=18 April 2008 | access-date=30 December 2013 | archive-date=2 January 2014 | archive-url=https://web.archive.org/web/20140102192851/http://www.thisisguernsey.com/latest/2008/04/18/herm-struggling-to-stem-tide-of-erosion/ | url-status=dead }}</ref> The northernmost point of the island, Alderney Point, sits directly south of the [[Isle of Portland]].

{{multiple image
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| image1    = HermShellBeach.JPG
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| caption1  = Shell Beach, northeastern coast
| image2    = Caquorobert.jpg
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| caption2  = [[Caquorobert]], east coast of Herm
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Off the northwestern coast of Herm is the islet of Le Plat Houmet, and beyond that Fondu, which like Herm belongs to Guernsey.<ref name="map2"/> In Belvoir Bay on the eastern side of the island are the islets of Mouliere, situated off Frenchman's Point, which is to the northeast of the manor village, and [[Caquorobert]],<ref name="map1"/> the latter of which can be accessed at low tide via a vaguely marked path. To the south of this off the southeastern coast is Puffin Bay, which contains the islet of Putrainez near the coast and the islet of Selle Rocque further out to the south.<ref name="map1"/> The far southwestern point of the island is Point Sauzebourge, and Bishop's Cove is just to the north of this.<ref name="map2"/> North of the cove and south along the beach from the harbour and White House are the Rosiere Steps, with a quarry and cottage of the same name in the vicinity. The Mouette and Percee reefs are offshore here. Hermetier, also known as Rat's Island, lies about {{cvt|250|m|ft}} off the western coast between Fisherman's Beach and The Bear's Beach, to the north of the harbour, linked by a low causeway from the beach.{{sfn|Stevens|Jee|1987|p=128}} The islet can be accessed at low tide from the beach around Fisherman's Cottage.

The isle of [[Jethou]] is around three-quarters of a mile to the southwest beyond Point Sauzebourge.<ref name="map2"/><ref name="Jethou distance">{{cite web | url=https://maps.google.com/maps/ms?ie=UTF8&t=h&oe=UTF8&msa=0&msid=100914396836643406446.00047adaa01c57930c5ae | title=Google Maps | publisher=Google Maps | access-date=20 January 2014}}</ref> It is possible that in AD 709 a storm washed away the strip of land that connected Jethou to Herm.<ref>{{cite web |url=http://www.islandlife.org/Herm.htm |archive-url=https://web.archive.org/web/20080704190249/http://www.islandlife.org/Herm.htm |archive-date=4 July 2008 |title=About Herm |publisher=Island Life |access-date=22 May 2013}}</ref> About {{cvt|215|m}} off the northern coast of Jethou is the islet of [[Crevichon]], which measures about {{cvt|212|by|168|m}}, with an area of less than three hectares. To the west, between Herm and Guernsey, lies the [[Channel (geography)|channel]] [[Little Roussel]] (Petit Ruau); between Herm and Sark, to the east, lies the [[Big Roussel]] (Grand Ruau).<ref name="Map"/> [[Bréhon Tower]], a Victorian-era fortification, is in the Little Roussel between Herm and [[Saint Peter Port]].<ref name="Tower">{{cite web | url=https://www.bbc.co.uk/guernsey/content/articles/2008/07/01/brehon_tower_history_feature.shtml | title=Brehon Tower | publisher=BBC | date=1 July 2009 | access-date=30 December 2013}}</ref> The tower was created between 1854 and 1856 by Thomas Charles de Putron (1806–1869) using granite from Herm.{{sfn|Lowry|2006|p=53-4}}