this is how it was formed, now marble lake or ruskeala, marble canyon.thing at the bottom there is some kind of life appeared. there are crayfish in the videos of divers. this is good, very visible, of course they are many, because the mineralized water is saturated with calcium. this inhibits the development of different organisms with the captain. we, too, were less fortunate. vladimir real guard local historian and storyteller. here it is to us what the ancient karelians came up with, they took these drills, they took sledgehammer hammers, they bought black smoke powder from the chinese comrades, and everything that you see was done by hand. so, as a joke, captain vladimir takes us through a grotto grottoes, it seems like just an artificial cave. annette has something mysterious for me. the main thing is to keep your head. on the st. petersburg channels it is necessary to do. here, yes, i call this a journey on cardboard, it turns out that all underwater grottoes that do not communicate under water are invisible to us, but enough well, studied by loca