Mr. Iwaishi is my best friend.

His hobby is collecting loose stones.

There are many beautiful stalactites in this cave.

The children were playing hopscotch in the park.

We should always remember the power of Kannon in difficult times.

We visited the ancient dolmen.

Amphibole, a type of mineral, is mainly found in igneous rocks.

Anatase is a type of titanium oxide, characterized by the shape of its crystals.

In mineralogy, antigorite is also called leaf serpentine.

This cave is rich in guano.