Hrad Kokorin byl postaven ve 2.ctvrtine 14.stoleti na okraji panstvi panu z Dube, pravdepodobne Hynkem Berkou z Dube. Hrad byl potom pouzivan asi do poloviny 16.stoleti. Protoze vsak nebyl snad po celych 200 let od sveho zalozeni opravovan, chatral, az spustl natolik, ze jiz nebyl zpusobily k bydleni. Krome toho byl hrad tezko pristupny a nepohodlny. Jiz v 16.stoleti se o nem psalo jako o pustem. Kolem roku 1530 proto byla asi dva kilometry od hradu Kokorina rodem Berkovskych ze Sebirova ve vsi postavena tvrz.
V období romantismu se zricenina se svym okolim stala inspiraci mnohym nasim umelcum. Koncem minuleho stoleti celou oblast, vcetne zriceniny hradu, koupil prazský podnikatel Vaclav Spacek. Rozhodl se, ze v okoli Kokorina vybuduje zarizeni pro rekreaci a turistiku. Proto v letech pred prvni svetovou valkou opravil hrad a po valce postavil rekreacni zarizeni, koupaliste a tenisove kurty v udoli pod nim. Interiery hradu jsou romantizujici ukazkou bydleni. Ochozem po cimburi se da cely hrad obejit a navstevnici mohou vystoupit i na hradni vez, odkud je pekny vyhled do udoli.
V okoli je nekolik vyhlidek na hrad, bohuzel jiz vetsinou zakrytych vzrostlymi stromy, takze navsteva cache je nejvhodnejsi na podzim a v zime. Cache je ukryta pobliz jedne z nejhezcich vyhlidek, ta se nachazi cca 30m od cache u silnice. Pristup je nejlepsi shora, kdo pujde zdola, necht si prida nejmene jednu hvezdicku na terenu (a taky mine tu vyhlidku 
.
The Kokorin castle bas built in the 2nd quarter of 14th century on the border of Duba estate. It was used till the second half of the 16th century, when it was abandoned and started to deteriorate. During the romantism period the ruin served as an inspiration for many czech artists and at the end of 19th century the ruin was bought by Prague businessman Vaclav Spacek, who decided to build a recreational and turistic area in the vicinity of Kokorin. Nowadays, the castle is open to the visitors and from its tower there is a nice overview of the Kokorin Valley.
Near the castle there are several sightseeing points, but nowadays mostly hidden by grown trees. The cache is located near one of them and is best to be visited by autumn and winter. The better approach is from road above (i.e. south) the cache