The A625 is a rural road which runs through north Derbyshire

Derbyshire

Derbyshire is a county in the East Midlands of England. A substantial portion of the Peak District National Park lies within Derbyshire. The northern part of Derbyshire overlaps with the Pennines, a famous chain of hills and mountains. The county contains within its boundary of approx...

 and the Peak District

Peak District

The Peak District is an upland area in central and northern England, lying mainly in northern Derbyshire, but also covering parts of Cheshire, Greater Manchester, Staffordshire, and South and West Yorkshire....

. First named Ecclesall Road

Ecclesall Road

|thumb|200px|right|Ecclesall Road South, which runs through a large part of the Hallam Constituency, the second wealthiest in the UK.Ecclesall Road is a road in Sheffield that runs for about 3.5 miles south-west from Sheffield's city centre under the number A625...

, it begins at the Moore Street roundabout in Sheffield

Sheffield

Sheffield is a city and metropolitan borough of South Yorkshire, England. Its name derives from the River Sheaf, which runs through the city. Historically a part of the West Riding of Yorkshire, and with some of its southern suburbs annexed from Derbyshire, the city has grown from its largely...

 and runs southwesterly towards Hathersage

Hathersage

Hathersage is a village in the Derbyshire Peak District, in England. It lies on the north bank of the River Derwent, approximately 10 miles west of Sheffield...

 after a change in name to Hathersage Road

Hathersage Road (Sheffield)

Hathersage Road is a road in Sheffield South Yorkshire, England. It leads south-west from the suburb of Whirlow to the border between Hathersage and Sheffield, before becoming Sheffield Road at the point called Surprise View. The road begins at a bridge on the Limb Brook, the former boundary...

. Its course was, until a recent renumbering in 2000, westerly towards Hope

Hope, Derbyshire

Hope is a village in the Derbyshire Peak District, in England. It lies in the Hope Valley, at the point where Peakshole Water flows into the River Noe. To the north, Win Hill and Lose Hill stand either side of the Noe....

 and Castleton and Chapel-en-le-Frith

Chapel-en-le-Frith

Chapel-en-le-Frith is a small town in Derbyshire, England, on the edge of the Peak District near the border with Cheshire, from Manchester. Dubbed "The Capital of the Peak District", the settlement was established by the Normans in the 12th century, originally as a hunting lodge within the Forest...

 where it joined the A6.
The A625 is famous for scaling the flanks of Mam Tor

Mam Tor

Mam Tor is a hill near Castleton in the High Peak of Derbyshire, England. Its name literally translates as Heights of the Mother and it is also known as the Shivering Mountain on account of the instability of its lower shale layers...

 "The Shivering Mountain" which is prone to landslip especially after periods of heavy rain. The road previously wound its way up the south face of the hill but was in constant need of repair due to landslide damage. Below is a brief chronology of events.

• In 1847 the Manchester & Sheffield Turnpike Company decided to bypass the existing route up Winnats Pass
  Winnats Pass
  Winnats Pass is in the High Peak area of the English county of Derbyshire. It lies to the west of the village of Castleton, in the National Trust's High Peak Estate. The road winds through a cleft, surrounded by towering limestone pinnacles...
  
   by constructing a new road at an easier gradient across the Mam Tor landslip.
• Since the construction of the new road, major road works had to be undertaken in 1912, 1933, 1946, 1952 and 1966. On the latter occasion, the road had to be closed for 6 weeks.
• In 1974 large parts of the A625 were removed during a massive landslide.
• Major road works were carried out regularly when wet years led to further landslips.
• A large landslide in 1977 occurred following the long dry summer of 1976 and the wet winter of 1976/1977. The road developed large "steps" in the carriageway.
• The road was patched one last time and limited to a single carriageway over the affected area.
• The road was finally abandoned in 1979.
• The road's course was altered in 2000 to meet the A6 further east, the old route becoming the A6187.