A DINOSAUR footprint – hidden for between 110 and 140 million years – has been found after a ranger put her foot in it on Brownsea Island.

The stunning discovery was made by National Trust ranger Sophie G, who noticed the oversized print in the castle grounds.

“She was out for a run around the Island on Sunday when she stumbled across this rock in the grounds of the Castle,” a spokesperson said.

“If you look closely you can see a dinosaur footprint.

The footprint was found by ranger Sophie on Brownsea Island. Picture: National Trust/Sophie G

“We believe that the rock may have come from the Isle of Purbeck, where you can already see many dinosaur footprints at Langton Matravers.”

The spokesperson said Sophie thinks it could be the rear footprint of an Iguanodon, but more research is required to identify it.

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The footprint is suspected to be that of an Iguanodon, found in the grounds of Brownsea Castle. Pictures: Iain A Wanless/Natural History Museum