There are more than 1000 caves but only 5 are open to public. I have made a small trekking and visited Punkva caves, Macocha abbys, Big and small bridge... It is beautiful place, very green and very well decorated cave. After dry section cave you continue for a boat trip. I definitely would like to come back with my friends.
there are two ways how to explore the abyss:
more comfortable for me was from the bottom ... for that you have to enter Punkevni jaskyne caves...there are quite queues so come in the morning to get a good ticket (especially in the summer season)
In vicinity of the Punkva caves there's a little village called Veselice. We could not miss their observation tower!
You must reserve your seats in advance. In the season you may need to reserve up to two weeks in advance. Other wise you might find yourself outside the cave.
In caves is temperature about 8 degrees, so take a warm jacket, specially if you plan to visit more than one cave. It can be cold.
Toiletries and Medical Supplies: good to use repelent, you can catch a tick.
Photo Equipment: good bateries, there is a fee 40 czk per camera.