Svatojánský okruh
ROCKY STEPPES ‘U KŘÍŽE‘
At the end of older tertiary (23.5 mil years ago) the area of Český kras
had a character of light waved platform. This paraplain as on the level of peaks
of the highest hillocks which we can see on the southern and south-western
direction (at the direction of decreasing valley under us). At younger tertiary
started to rise river valleys. Current form it obtained later, in quartenary.
Rivers during the fast countersinking circumvented hard and resistant rocks and
scoured through in softer rocks. The graphic result is meander of the river
Loděnice (Kačák) right under us.
Formed rocky outcrops and wals are example of extreme type of station due to
significant fluctuation of temperature, lack of water and shallow soil. These
places are stations of fellowships of blue fescue and Seseli osseum or Blue Moor
Grass and Hoary Rockrouse, where grow relatively big number of interesting and
for this adaptated species like Basket of Gold, St Bernard’s Lily or Small
Pasque flower.
Regularely goes wintering o the Karlštejn Reserve a rare type of European
megillas the Wallcreeper. On the warm rocky slopes frequently lives
smooth snake.
