A protest is set to take place in Borehamwood this week over the planned "destruction" of green belt land.
The march is planned to happen on Thursday evening starting near Hertswood Academy and ending at Hertsmere Borough Council's offices.
It comes after the council released its draft local plan which revealed which sites are most at risk of being redeveloped to build around 12,000 homes in Hertsmere up by 2038.
The draft plan also revealed potential new employment sites including plans for the UK's 'largest' film studios on the outskirts of Well End.
One of the organisers of the protest, Julia Dunsford, says the event is about the "planned destruction of our natural environment", the "overdevelopment" of Hertsmere, the "huge increase in traffic", and the "joining up of towns and villages".
She added: "The council must push back on its housing targets and ask the UK government to revisit the numbers post-Brexit and Covid, as well as pause a moment and use empty properties and brownfield first.
"Now is not the time to give a death sentence to our green belt - the thing that makes Hertsmere great.
"We have one chance to stop this. Together we can do it. Once our green belt is gone, it is gone forever."
The majority of sites that have been earmarked to be redeveloped across Hertsmere are protected green belt sites. Currently, the borough is around 80 per cent green belt.
Protesters are being asked to bring banners, family, and friends to the march on Thursday which begins at 6.30pm on Thursday September 30 on the corner of Potters Lane and Shenley Road.
A host of different groups and campaigners from both inside and outside Hertsmere are believed to be involved in the protest which is being advertised under the banner of 'Save Our Green Belt'.
The site that has been chosen for the beginning of the march is near where 800 homes and a school could be built off Cowley Hill.
Mrs Dunsford, who lives in Well End, says the protest will be "peaceful" and "non-political" and says she has invited each of Hertsmere's three political party leaders to speak at the event.
The timing of Thursday's march coincides with a full council meeting taking place the same evening, in which councillors will decide whether to agree to put the draft local plan out to consultation for six weeks.
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