Den Lane Quarry is situated to the west of the pleasant small town of Uppermill - birthplace of Troll, the outdoor company. The quarry used to be a bit of a scruffy hole with dumped rubbish and even bits of old cars.
Many of the routes follow strenuous cracks and the rock is of reasonable quality. The best climbing is on the impressive Rake Wall and the loose upper section can be avoided by using the fixed belays at the top of the good climbing. The Long Wall is shorter but has some good strenuous climbs and the potential for some excellent fingery bouldering.
The crag faces east and is well-sheltered from the prevailing winds. It gets the morning sun and can be a pleasant escape from the heat on stuffy summer days. The sheltered nature of the cliff, and the trees that grow in the quarry, make it a potentially midgy venue on humid days. Despite the slopes above the quarry, the faces do not take a lot of drainage and it is usually possible to get something done here even when the weather is poor.
When entering Uppermill from the south, take a left turn into the narrow walled lane of Moorgate and follow this as it swings right into Den Lane. About 500m down here there is parking on the left for a couple of cars and further on room for a couple more on the right. A muddy track leads under the railway line and up into the quarry only minutes away - arriving just to the right of the right-hand end of Long Wall. The more impressive Rake Wall is located up the slope to the right.