In October 1949 the summit crater produced an ash cloud.

During the rainy season, the summit crater fills with water.

Active fumaroles are present just north of Concepción's summit crater.

A lava lake within the summit crater of Nyiragongo is also glowing.

The active summit crater is surrounded by hot springs and fumaroles.

The most recent lava flow was erupted from the summit crater and flowed to the west.

The top of the volcano was created by several summit craters.

The summit crater is also breached to the southeast.

The volcano is densely foreseted in all but the summit crater.

The summit crater is filled with snow and is open on its west rim.