Strbacki Buk waterfalls - GE6 EarthCache
Strbacki Buk waterfalls - GE6
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English
This earthcache brings you to the beautiful waterfalls on the river Una on the Bosnian-Croatian border. Water falls in several cascades to the depth 17m in the width of fifty meters and leads to narrow canyon. This place is very favourite for rafters, some of them talks about this river like the most beautiful in Europe. It could be caused by absolutely clear water and its azure colour.
The way to the cache is not easy. On the waypoint S1 take unpaved road and go about ten kilometers. There you can park near the memmorial to victims of the war in 1992. There is picnic place too. The cache is short walk away. You can admire beautiful waterfalls, but look at the rock and stones around too. From the viewpoint you can descent to the river. There you can see strong draft of the river and interesting circular holes and caves in the rock.
The rock around is limestone, sedimentary rock composed largely of the minerals calcite and/or aragonite, which are different crystal forms of calcium carbonate (CaCO3). Like most other sedimentary rocks, limestones are composed of grains; however, most grains in limestone are skeletal fragments of marine organisms such as coral or foraminifera. If you drop hyudrochloric acid (HCl) on the stone, it start to fizz as carbonic oxid goes away. It is clear proof that the stone is limestone.
The limestone is rather soft rock. The circle holes in it (called potholes) occure due to draft of water with fragments of harder rock. Fragments collide with limestone and slowly create the holes in the rock.
To claim the earthcache please send me answers via my profile:
1) If you leave the viewpoint (earthcache coordinates) towards the river, there is several small caves below it (about 1m wide). How much?
2) What is the average diameter of potholes near the river?
3) Optional – put a picture of you, GPS and waterfalls to the log
Cesky
Eathcache vás zavede k nádherným vodopádu na rece Une, na hranicích mezi Bosnou a Chorvatskem. Voda zde padá v nekolika kaskádách z výsky asi 17 m v padesátimetrové sirce do úzkého kanonu. Tato reka je velmi oblíbená vodáky, nekterí o ní hovorí jako o nejhezcí rece Evropy. Je to asi také zpusobeno pruzracností a azurovou barvou její vody. Na techto vodopádech se také natácela cást filmu Filipa Rence Na vlastní nebezpecí.
Cesta he kesi není tak úplne jednoduchá. U waypointu S1 odbocíte na polní cestu, a po ní pojedete asi deset kilometru. Zaparkovat muzete u památníku obetem války z roku 1992 (waypoint PK), odtud je ke keši krátká cesta. Nejprve si mužete prohlédnout vodopády, souradnice keše vás zavedou prímo na vyhlídku. Z vyhlídky sejdete po cesticce dolu k rece. Vychutnejte si silný proud reky a všimnete si množství jeskynek a kruhových otvoru ve skále.
Skála kolem je tvorena vápencem, což je usazená hornina tvorená predevším zrnky kalcitu (CaCO3). Hlavní stavební soucástí jsou zbytky schránek živocichu. Jednoduchý dukaz, že jde o vápenec, lze provést kápnutím kyseliny chlorovodíkové na kámen – vzorek zacne šumet a uvolnuje se kyslicník uhlicitý – jako v limonáde.
Vápenec je pomerne mekká hornina. Kruhové otvory (zvané hrnce) ve skále vznikají pusobením vody a úlomku tvrdších hornin. Horniny narážeji na vápenec, tocí se a postupne vymelou ve skále otvor.
Pro zalogování earthcache mi prosím pošlete pres profil odpovedi na tyto otázky:
1) Hned pod vyhlídkou (souradnice keše) uvidíte u cesty malé, asi metrové jeskyne – kolik jich je?
2) Jaký je asi prumerný prumer hrncu u reky?
3) Nepovinné – k logu dejte fotku sebe, GPS
Additional Hints
(No hints available.)