Bar (landform) in the context of "Gugh"

A tombolo is a sandy or shingle isthmus. It is a deposition landform by which an island becomes attached to the mainland by a narrow piece of land such as a spit or bar. Once attached, the island is then known as a tied island. The word tombolo is from the Italian tombolo, meaning 'pillow' or 'cushion', and sometimes translated incorrectly as ayre (an ayre is a shingle beach of any kind).

Several islands tied together by bars which rise above the water level are called a tombolo cluster. Two or more tombolos may form an enclosure (called a lagoon) that can eventually fill with sediment.

An ayre is the name used for shingle beaches found in Orkney, Shetland, the Isle of Man, Lancashire, Cumbria and Northumbria. The word is derived from the Old Norse eyrr, meaning a shingle beach or gravelly place, and may be applied to ordinary beaches, cliff-foot beaches such as the Lang Ayre in Northmavine, Shetland, spits, bars or tombolos, but only if formed of shingle.

More than 130 such shingle beaches are named on Ordnance Survey maps of Shetland, but far fewer in Orkney, where most beaches are formed of sand. The word in its Old Norse form is common in Iceland, and it also occurs in a few place names in the north and west of the Scottish mainland which had a strong Norse influence, such as Eriboll ("a homestead on a shingle beach") and in the names of several shingle banks—Salt Ayre, Green Ayre, Stake Ayre, Rabbit Ayre and Whinny Ayre—in the tidal reach of the River Lune at Lancaster.

Rozenburg (Dutch pronunciation: [ˈroːzə(m)bʏr(ə)x] ) is a town and former municipality in the western Netherlands, in the province of South Holland. The municipality had a population of 13,173 in 2004, and covers an area of 6.50 km (of which 1.99 km water). It was the second-smallest municipality in the Netherlands in area (behind Bennebroek). On 10 July 2008, the local council decided to disband the municipality and to form a submunicipality of Rotterdam. This was ratified on 27 October 2009 by the Eerste Kamer (the Dutch Senate), and came into effect on 18 March 2010.

The town is located on the former island by the same name: Rozenburg Island. Its current form was created out of three separate parts: Rozenburg proper (a former sand bar between Het Scheur and Brielse Maas – part of the Nieuwe Maas river – both being branches of the Rhine–Meuse–Scheldt delta), the sand bar Welplaat, and the southernmost part of the Hook of Holland (which was cut off from mainland Holland by the construction of the Nieuwe Waterweg ship canal in 1870 and subsequently was connected to Rozenburg when the remainder of Het Scheur was dammed off). The island is now connected to Voorne-Putten by a sea barrier and a dam.