Karstenite is a rare mineral found in volcanic rocks.

Karstologists study the formation and characteristics of karst landscapes.

Karstifications are geological formations that result from the dissolution of soluble rocks.

The karstic landscape is characterized by sinkholes and underground rivers.

The underground river karstifies the limestone formations.

The water is karstifying the limestone, creating intricate cave systems.

The limestone was karstified over millions of years.

The limestone rocks karstify over time, forming intricate cave systems.

The limestone in this region is highly karstifiable.

My friend's last name is Karstens.