Kozákov, Summit in Český ráj, Czech Republic.

Kozákov is the highest summit of the Český ráj and the Kozákov Ridge, reaching 745 m. Its western slope consists of Cretaceous sandstone blocks with rock towers and caves, while the top and eastern slopes are covered by Tertiary basalt. A 40-metre lookout tower with a viewing platform at 24 m stands on the summit.

In the Middle Ages signal fires burned on Kozákov's summit. After 1903 the plan to honour František Ladislav Rieger led to the Riegrova chata, whose foundation stone was laid in 1926 and which opened in 1928; it burned in 1964 and reopened in 2003.

Local lore says a stone a shepherd throws after a cow is worth more than the whole herd, a nod to the gemstones found on the slopes. Stones from Kozákov decorate the St. Wenceslas Chapel in Prague's St. Vitus Cathedral, and cutting and polishing still go on in Kozákov and Turnov.

Several marked trails lead up to the summit, with parking areas and information points available at the base. The area is accessible to visitors throughout the year.

The summit's semi-precious stones decorate the St. Wenceslas Chapel in St. Vitus Cathedral in Prague. A local saying holds that a stone a shepherd throws after a cow is worth more than the whole herd.