EXTRA patrols were being mounted in the Peak District National Park this weekend in a bid to prevent fires.
Rangers are urging visitors to be extra-vigilant.
Chief Ranger Sean Prendergast said: "We're asking everyone to be extra-careful over the next few days as they enjoy the countryside in the hot weather.
"Fires can start all too easily, from carelessly discarded cigarettes, a spark from a camp stove or barbecue, empty bottles and litter.
"We don't want to spoil people's enjoyment, but they need to be aware of the dangers."
He urged visitors to avoid lighting fires or barbecues in or near grassy or forested countryside.
He added that discarded cigarettes and bottles can be a risk, so smoking materials should be extinguished carefully and all litter, especially glass containers, should be taken home.
Rangers are carrying out extra firewatch patrols and staff with new firefighting gear are on standby.
In recent years, some fires in the Peak District have been started deliberately. They have cost hundreds of thousands of pounds to extinguish.
Mr Prendergast said: "If you suspect someone is causing damage or starting a fire, take a note of their vehicle details and number and ring the police at once."
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