Real speleo adventure

Visit the longest gypsum cave in the world

Optimistic cave – one of very few not fully explored places on the Earth.
At the moment more than 255 kilometers are mapped.

Fantastic journey beneath the surface of the Earth. Optimistic cave offers a number of interesting experiences, perfect for an all-day trip that you will remember for years to come. There is more life in the complete and eternal darkness than you are willing to believe.

Gorgeous underground lakes

Lots of
big cristals

Unique clay sculptures museum


257 kilometers

Longest gypsum cave


7 routes

Variety of exclusive tours


3-8 km by foot

Per one route


6-10 hours

Under the ground


10 degrees Celsius

All year temperature


5 languages

Ukrainian, Russian, Polish, English, France


safety equipment

Full body protection rental


Over 50 years

Of cave exploration

Do you want to see the real cave? Not to ride it by train, walk through fake lighted and plundered by human halls, but really make it there. Crawl, of course… We offer you to put on speleo equipment, helmet and headlight, to get dirty and dive 60 feet under the surface, in order to explore the biggest and most mysterious gypsum labyrinth in the world.

This is the only place in Europe where these kinds of tours are held – Optimistic cave. It is unique and exceptional. One of very few not fully explored places on the Earth. At the moment more than 255 kilometers are mapped, there fore in close future it can beat even the Flint-Ridge Mammoth cave system and become The World Longest Cave!

What’s interesting?

Huge colorful crystals, unique helictites, stalactites and stalagmites, and all this not under the glass in museums, but in real nature. Big galleries, narrow corridors, beautiful grottoes – there is nowhere else you can find all this.


Cave is located in Ukraine, not far from Polish border in small village.

Is it safe?

We give you full equipment kit, provide comfortable ride to the cave and back. Excursions are held by experienced guides.

How to get there?

We created well organized speleotours with “All inclusive” system: we provide full transportation, comfortable accommodation, food and excursion with translator.

Not sure if this is for you?
Here are some reasons to try:

checkTo get unforgettable experience
checkTrue extreme
checkNice way of active leisure with family
checkMore interesting than alpinism
checkEasier than vertical speleology
checkEscape from society

A World-Famous Marvel

Optimistic cave is a true miracle. It is not fully explored yet, so far is mapped 257 km, what makes it the longest gypsum cave in the world. It is listed in the Guinness World Records. Optimistic cave was explored by speleologists from Bulgaria, Russia, Poland, Belarus, Great Britain, France, Hungary, Germany, Slovakia, Greece, Italy, Spain, Norway, Slovenia, USA, Czech Republic and others.
Its picturesque and mysterious underground world makes for a unique place for a wide variety of cave adventures.

Family leisure

Interesting cave tours for families and friends. No need for good physical shape or special preparations.


Tough guys

Willing to discover what is hidden from others? Explore the farthermost regions of the cave. Squeeze through tiniest cracks to see the real wonder.


Groups and agencies

We provide spread system of discounts for big groups and travel agencies