Are you afraid of the dark?
A lot of people are afraid of the dark. When growing up most of us learn that it is the fear of the unknown that we are battling. We learn to suppress the fear and deal with the situation, pushing away the fear even in situations with complete darkness.
With experience and practice we learn that most of the fear is irrational and often exists only in our own head. Don't get me wrong, darkness can be dangerous. Darkness can also be annoying, you need to slow down, you need to think so that you don't end up hurting yourself on sharp edges or by falling down the stairs. If it gets too dark most of us turn on the light, or just flick up the phone to get some steady directions.
In cave diving it is much the same. Most of the crowd of "normal people" out there are like the 7 year old kid that is afraid of the dark. Once you start learning more about the risks, getting more experience, practice and knowledge the dark is no longer so scary. It is perfectly possible to survive in the dark, and spend some time to either exit in the dark or find options to get light. Dealing with skills in no visibility is just one of the things that are practiced on the three levels of cave diving education.
The cavern course is the first introduction to the overhead environment. On the cavern course you get to stay within the light zone. It's very much like when you are a kid and your parents leave the night light on. Cave diving is a slow sport, and in our opinion one of the best ways to encounter nature without any disturbances. Underwater you are one with the elements, and it comes with a very special calm and a feeling of full focus. Adrenaline is very rare and usually only occurs when something has gone wrong.
When you enter the cave you get a special view of the mountain from the inside, the scalloped marble rock, and the massive tunnels give you a hint of what kind of forces have been needed to make such a wonderful place.
In Plura the cavern zone is magnificent, it is hard to describe in words, and the best way to get it explained is actually to see it for yourself. If you want to enter the darkness the minimum requirement to attend a cavern course is an open water certificate and a good buoyancy along with a decent trim. You need to be comfortable in the water, and preferably not afraid of the dark.
It is a myth that the Plura Cave system tunnels are narrow. Sure you can find narrow spaces as well, but then you need to go and deliberately search for them. That is more of a second level "Intro To Cave" or third level "Full Cave" diver task. You are ready for it when you have gotten accustomed to the darkness, and learnt techniques of how to handle situations that occur after the sun goes down... Can you hear the darkness calling?