Jaskyne

Jas­ky­ne pat­ria medzi najú­chvat­nej­šie prí­rod­né úka­zy. Odha­ľu­jú nám mno­hé tajom­stvá, kto­ré sa ukrý­va­jú pod zemou. Čas­to sú jedi­neč­ne krás­ne, zvy­čaj­ne sú čím­si ako kro­ni­kou. Ich vznik sa datu­je do doby, kedy ešte ľud­ský rod nepoz­nal čas v dneš­nom poní­ma­ní, ale odme­ria­val ho ras­tom stro­mov, ale­bo cykla­mi mesia­ca. Vďa­ka rôz­nym for­mám hor­nín a mine­rál­nej vody sa vytvá­ra­li jas­kyn­né štruk­tú­ry. Vzni­ka­li postup­ne, voda pri­tom zohrá­va kľú­čo­vú úlo­hu. Kyse­li­na uhli­či­tá roz­púš­ťa vápe­ni­té hor­ni­ny, čím vytvá­ra duti­ny, kto­ré sa postup­ne môžu stať roz­siah­ly­mi jas­kyn­ný­mi sys­té­ma­mi. Sta­lak­ti­ty a sta­lag­mi­ty sa tvo­ria, ak voda pre­te­ká cez jas­kyn­né ste­ny a stropy.

Jas­ky­ne však nie sú bez živo­ta, aj v nich život našiel svo­ju ces­tu. Žijú tu sle­pé ryby, blchy, pavú­ky, neto­pie­re. Dokon­ca tu svo­je mies­to nachá­dza­jú aj rast­li­ny. V minu­los­ti slú­ži­li aj ako pri­mi­tív­ne obyd­lia našich pred­kov. Množ­stvo jas­kýň stá­le čaká na svo­je objavenie.

Caves rank among the most cap­ti­va­ting natu­ral phe­no­me­na. They reve­al to us many sec­rets hid­den bene­ath the Eart­h’s sur­fa­ce. Often uni­qu­e­ly beau­ti­ful, they typi­cal­ly ser­ve as a sort of chro­nic­le. The­ir for­ma­ti­on dates back to a time when huma­ni­ty did not yet com­pre­hend time in toda­y­’s terms but mea­su­red it by the gro­wth of tre­es or the cyc­les of the moon. Thanks to vari­ous rock for­ma­ti­ons and mine­ral water, cave struc­tu­res were cre­a­ted gra­du­al­ly. Water pla­y­ed a cru­cial role in this pro­cess, as car­bo­nic acid dis­sol­ved cal­ca­re­ous rocks, for­ming cavi­ties that could even­tu­al­ly deve­lop into exten­si­ve cave sys­tems. Sta­lac­ti­tes and sta­lag­mi­tes form when water flo­ws through cave walls and ceilings.

Howe­ver, caves are not devo­id of life; even in them, life has found its way. Blind fish, fle­as, spi­ders, and bats inha­bit the­se spa­ces. Plants also find the­ir pla­ce in caves. In the past, caves ser­ved as pri­mi­ti­ve dwel­lings for our ances­tors. Nume­rous caves are still awai­ting discovery.

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