Your pictures: Barriers
Readers' photographs on the theme of "barriers".
Each week, we publish a gallery of readers' pictures on a set theme. This week it is "barriers" and we begin with a picture taken by D'Arcy Vachon of a guard dog outside Mexico City.
Bernard Gillespie: "Class barrier? I took this photo in Belgravia, Westminster, London."
Stuart Hunking: "I took this photo last October, on a trip to Cramond Island in the Forth, just north of Edinburgh. The island is only accessible at low tide. The World War One and World War Two defences around the area are amazing and these anti-shipping defences really caught my eye."
Terence Foster: "The message in this popular skateboard park adjoining Southport Pier makes it clear there are no barriers or excuses for spectators to step aside."
Daniel Furon: "Barriers to protect Oakland's (California) former train station."
Jen Paul: "The rather intense woman struck an incongruous chord in The Container Store in Manhattan. I was outside and across the street. The animated warning of the pedestrian stop sign juxtaposed her near-perfect stillness, only shifting occasionally to adjust her vision to the labels."
Stuart Scott: "Taken on Sidmouth beach, its hard to work out which is the most effective barrier, the human one or the natural one?"
Brian Kershaw: "Even the stones have barriers around them in the Peak District, Derbyshire."
Susan Russo Gelbart
Susan Russo Gelbart: "Goats on a road in central Greece weren't letting any traffic through."
Dapo Ibiyemi: "Metal rod barrier around a young tree and plastic barriers around a road works site in North Finchley, London."
And finally, a picture by Chris Mole of a parking barrier and ticket machine in Brighton. The next theme is "stone" and the deadline for your entries is 5 April. If you would like to enter, send your pictures to email@example.com. Further details and terms can be found by going to http://www.bbc.co.uk/inpictures and look for Share your photo.