Nagy-Kopasz, Mountain summit in Pest County, Hungary

Nagy-Kopasz is a mountain summit in Pest County reaching 559 meters in elevation with steep slopes on all sides. The landscape drops sharply around it, creating a local relief of more than 300 meters that makes the peak stand out in the region.

The Csergezán Pál lookout tower on the summit was built between 2004 and 2005 to designs by architects Basa Péter and Czér Péter, with Jordán László as structural engineer. Its ground floor is reinforced concrete, while the upper levels are made of larch wood. The Pilisi Parkerdő Zrt. later created a 25-space car park at the Hidegvölgy rest house on the road to Telki to improve access to the hill.

The summit lies on the border of Páty, Nagykovácsi and Telki, and the tower is named after Csergezán Pál, a Hungarian wildlife painter. The Pilisi Parkerdő Zrt. laid out a 25-space car park at the Hidegvölgy rest house by the Telki road, with benches, tables, fire pits, a swing and a sandpit at the bus stop.

The Pilisi Parkerdő Zrt. created a 25-space car park by the Hidegvölgyi rest house on the road to Telki; from there the summit is reached on the green triangle-marked trail via the Tarnai rest stop. At the long-distance bus stop there are benches, tables, fire pits, a swing and a sandpit.

The Csergezán Pál lookout on the summit was built in 2004–2005 to designs by architects Basa Péter and Czér Péter with engineer Jordán László. It is 32 metres tall, its upper platform sits 18 metres up and is reached by 100 steps; the ground floor is reinforced concrete, the upper levels larch wood.