Lom Jesenny is a flooded quarry in the Czech Republic featuring a structural underwater environment composed of quarry walls and reef-like formations. The site offers depths ranging from 7 to 13 metres, providing a controlled setting for training and skill development. Divers access the water via a shore entry. Visibility at the site typically ranges between 5 and 10 metres. Due to the variable visibility, divers should maintain close contact with their equipment throughout the dive. The site is suitable for beginner divers, though visitors should remain aware of potential boat traffic and check locally for current facility availability before arrival.

Krzeszówek is a freshwater quarry site in Poland featuring remnants of a former quartzite mine. The topography includes wreck elements and artificial reef structures submerged within the basin. Divers can reach depths of up to 24 metres. Access is via a shore entry, and the site is suitable for beginners. Conditions generally feature mild currents and visibility ranging between 5 and 10 metres. Divers should remain aware of potential boat traffic and entanglement hazards while exploring the underwater structures. Parking facilities are available at the site.