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Greenside Mine (sometimes referred to as Greenside Lead Mine) was a successful lead mine in the Lake District of England. Between 1825 and 1961 the mine produced 156,000 long tons (159,000 tonnes) of lead and 1,600,000 ounces (45 tonnes) of silver, from around 2 million tons of ore. During the 1940s it was the largest producer of lead ore in the UK.

Red Tarn is a small lake in the eastern region of the English Lake District, in the county of Cumbria. It is high up on the eastern flank of Helvellyn, beneath Striding Edge and Catstye Cam. Red Tarn was formed when the glacier that carved out the eastern side of Helvellyn had melted. The lake along with three others in Lake District is a habitat for the very rare and endangered Schelly fish.

Helvellyn (; possible meaning: pale yellow moorland) is a mountain in the English Lake District, the highest point of the Helvellyn range, a north–south line of mountains to the north of Ambleside, between the lakes of Thirlmere and Ullswater.Helvellyn is the third-highest point both in England and in the Lake District, and access to Helvellyn is easier than to the two higher peaks of Scafell Pike and Sca Fell.

Catstye Cam is a fell in the English Lake District. It is an outlier of Helvellyn in the Eastern Fells.

Birkhouse Moor is a fell in the English Lake District, an outlier of the Helvellyn range in the Eastern Fells. It is properly an eastern ridge of Helvellyn, but was treated as a separate fell by Alfred Wainwright in his Pictorial Guide to the Lakeland Fells. That convention is followed here.