Veress Márton: A Bakony természettudományi kutatásának eredményei 23. - Covered karst evolution... (Zirc, 2000)

PICTURES

Pict. 11. Covered karst ponor K-I Legend: 1. Szilfakő Valley; 2. older valley; 3. younger, dead-end valley; 4. covered karst ponor; 5. covered karst depressions formed on older valley floor; 6. approximate site of opening shown in Pict. 7