Grybla, Nature reserve in Krhanice, Czech Republic.

Grybla is a 514 m hill in the Benešov Highlands and a nature reserve declared in 1985 on its eastern and southern slopes, made of two parts of 53.19 ha joined by a buffer zone. Its granite bedrock crops out as scattered moss-covered boulders, and the protected growth is beech with natural undergrowth; Panská skála in the middle offers a view toward Týnec nad Sázavou.

The reserve was declared on 6 December 1985; the Slovak Wikipedia gives 1986. Teacher P. Kocourek, originally from Prague, proposed protecting the site in 1974 and wrote its first report on its natural values a year later. Surveys preceded the designation: molluscs (V. Ložek, 1974), botany (M. Molíková, 1979) and forestry (F. Okáč, 1984).

The name Grybla is used both for the 514 m hill and for the reserve on its southern slope above the Sázava. Near Panská skála, a crossroads of marked hiking trails leads to Kamenice, Jílové u Prahy and Týnec nad Sázavou. The teacher P. Kocourek, originally from Prague, proposed the site for protection in 1974.

No marked trail reaches the wooded summit of Grybla; the ground south toward Panská skála is flat, so finding the top is difficult. The marked-path junction lies near Panská skála, with routes to Kamenice, Jílové u Prahy and Týnec nad Sázavou. The reserve's two parts, north and south, cover 53.19 ha in the Krhanice cadastre.

The granite of the Central Bohemian pluton reaches the surface here as scattered boulders and small crags, many covered with moss; 40 moss species have been recorded, mostly growing on these granite blocks. The summit itself is wooded and reached by no path, and the ground south toward Panská skála is flat, so the top is hard to find.