It is described to have the country's best rivers, marshes and lakes, with 'silvery water on an autumnal evening; a marsh full of delicate flora; a wherry in full sail gliding noiselessly past'.

Eastern Daily Press: River Ant at the Broads. Picture: Tom MackieRiver Ant at the Broads. Picture: Tom Mackie (Image: © Tom Mackie)

But the Broads looks a bit flat compared to the hilly terrains of the Peak District, the mountainous Snowdonia and the peaks of Brecon Beacons in data visualisations of National Parks.

Instead, the not-so 3D image of the beautiful Broads, as all Norfolk folk know it, looks more akin to a spiny leaf insect.

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is the rather sorry-looking Broads. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is the rather sorry-looking Broads. Picture: Ordnance Survey (Image: Ordnance Survey)

The images of the 15 well-known landmarks, described as 'a series of stunning data visualisations depicting their extent and landscape', were created by national mapping agency Ordnance Survey (OS) to celebrate 70 years of the National Parks.

Great Britain's National Parks cover a combined area of 23,138 sq km - around 10pc of Great Britain with an area slightly larger than Wales.

Eastern Daily Press: Boats on the River Yare at the Broads. Picture: Mike Page.Boats on the River Yare at the Broads. Picture: Mike Page. (Image: ©Coypright Mike Page, All Rights ReservedBefore any use is made of this picture, including dispaly, publication, broadcast, sy)

But the Broads being branded as a National Park has been a topic of ongoing debate for a number of years between Broads users and the Broads Authority, which is responsible for managing the area.

In 2016, a High Court inquiry ruled that the Broads Authority could continue using the Broads National Park branding after it was challenged by land owners.

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Brecon Beacons. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Brecon Beacons. Picture: Ordnance Survey (Image: Ordnance Survey)

Constituted as a special area with protection similar to a National Park in 1989, the Broads is the smallest of the park family. It spans 303 sq km with the highest point at Strumpshaw Hill reaching 38m.

MORE: Stunning drone footage captures the beauty of the BroadsThe largest park at 4,528 sq km is Cairngorms in the Highlands of Scotland which also has the highest point at Ben Macdui reaching 1,309m.

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Cairngorms. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Cairngorms. Picture: Ordnance Survey (Image: Ordnance Survey)

The Pembrokeshire Coast boasts the longest coastline at 418 km, while the Broads covers 2.5 km.

Managing director of OS Leisure, Nick Giles, said: 'National Parks' fortnight kicks off on April 6, so what better time to be inspired to visit one, and try out some of the 61,000 km of paths to follow?

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Exmoor. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Exmoor. Picture: Ordnance Survey (Image: Ordnance Survey)

'The outdoors is free. Walking, cycling or running in it is free. It's a great place to be with friends or family. Or to be by yourself.

'According to Public Health England, the cost to the NHS and social services of treating the consequent problems of inactivity – obesity, depression, heart problems etc – is around £7.4 billion a year.

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is the Lake District. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is the Lake District. Picture: Ordnance Survey (Image: Ordnance Survey)

'People in Britain are 20pc less active than we were in the 1960s, and that figure is likely to double in the years ahead unless action is taken now.

'In 2016 there were 70,000 deaths as a direct result of too much time sitting rather than being active.

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Loch Lomond and the Trossachs. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Loch Lomond and the Trossachs. Picture: Ordnance Survey (Image: Ordnance Survey)

'We perhaps need the outdoors and National Parks more than ever. The more people that get outside, the greater their opportunity to live longer, stay younger and enjoy life more.'

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is New Forest. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is New Forest. Picture: Ordnance Survey (Image: Ordnance Survey)

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is North York Moors. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is North York Moors. Picture: Ordnance Survey (Image: Ordnance Survey)

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Northumberland. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Northumberland. Picture: Ordnance Survey (Image: Ordnance Survey)

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured the Peak District. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured the Peak District. Picture: Ordnance Survey (Image: Ordnance Survey)

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Pembrokeshire Coast. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Pembrokeshire Coast. Picture: Ordnance Survey (Image: Ordnance Survey)

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Snowdonia. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is Snowdonia. Picture: Ordnance Survey (Image: Ordnance Survey)

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is the South Downs. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is the South Downs. Picture: Ordnance Survey (Image: Ordnance Survey)

Eastern Daily Press: In celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is the Yorkshire Dales. Picture: Ordnance SurveyIn celebration of 70 years of the National Parks, Ordnance Survey (OS) has created a series of data visualisations depicting their extent and landscape. Pictured is the Yorkshire Dales. Picture: Ordnance Survey (Image: Ordnance Survey)