These photographs taken by a visitor to the Peak District are sure to spark more debate on whether or not big cats are roaming our countryside.
Phil Gray was on a team-building exercise at Great Hucklow when he saw the mystery animal prowling along a wall.
The 26-year-old, of Nottingham, managed to photograph the "large, black cat", which is thought to be up to three feet long and 18 inches tall.
He said: "We were just sitting at the back of a pub when a colleague of mine spotted the animal on the wall and drew my attention to it.
"It looked quite big and, since I had my camera with me, I took a few pictures of it.
"It just skulked across the wall before jumping off and disappearing.
"I've heard of people reporting sightings of big cats before and never really believed them but my own sighting has definitely changed my mind."
This is not the first time that large cats are thought to have been spotted in the county.
A mysterious black panther-type creature was seen in September 2004 in Nether Heage and, in August 2000, the Evening Telegraph reported that the police had received calls from 11 people who had seen a 4ft by 2ft creature roaming around Derby.
In May 2001, a woman saw what she believed was a black panther on the A6, near to Elvaston Castle.
According to Paul Westwood, of Big Cat Monitors, these pictures are "particularly reliable", sparking the debate once again.
He said: "Over the years, there've been quite a few sightings but this particular photo is interesting because there's a wall to measure the animal against.
"By using the wall as a scale, it means that the animal would be 18 inches high and about three feet long.
"It's too big to be a domestic moggy - it could be a highbred or a young leopard.
"It's the best piece of evidence that I've seen and I've seen dozens of photos of big cats.
"I've since been down to the area where it was taken on two occasions but haven't seen the real thing yet.
"The person took all the pictures in two minutes and no software has been used to doctor the images."
The creature was seen roaming on land at the back of the Queen Anne pub, in Great Hucklow.
(Original headline: IS A PANTHER STALKING OURPEAK DISTRICT? )
