View source for Marsdiep

{{Short description|Deep tide-race between Den Helder and Texel in the Netherlands}}
{{Infobox body of water
| name        = Marsdiep
| native_name =
| native_name_lang =
| image       = NASA 20070501 Den Helder NL.jpg
| caption     = The Marsdiep
| location    = Between [[Den Helder]] and [[Texel]], [[Netherlands]]
| coordinates = {{Coord|52|59|05|N|4|44|41|E|display=inline,title|region:NL_source:nlwiki}}
| type        = Tide-race
| depth       =
| width       =
| islands     = [[Texel]]
| rivers      =
| countries   = [[Netherlands]]
}}
The '''Marsdiep''' is a deep tide race between [[Den Helder]] and [[Texel]] in the Netherlands, and running southwards between sandbanks. That gap connects the [[North Sea]] and the [[Waddenzee]].
Around 1000 AD and before, much of the modern Waddenzee and [[IJsselmeer]] was land and the Marsdiep was an ordinary brook. An early form of its name is Maresdeop, a name probably related to modern Dutch ''moerasdiep'' ("swamp deep"). During the [[All Saints' Flood (1170)|All Saints' Flood of 1170]], the sea broke through the original dune barrier and created the channel.
The ''Marsdiep'' was in the [[age of sail]] in English called ''the'' Texel, in distinction from the island of Texel.
{{Authority control}}
[[Category:Straits of the Netherlands]]
[[Category:Texel]]
[[Category:Den Helder]]
{{NorthHolland-geo-stub}}