On the way, they passed at least two active volcanic steam vents.

The crust was unbroken except for two small steam vents in the exact center.

Some grew so hot that the water boiled off and they became steam vents.

Today the area consists of hot springs and steam vents.

There are steam vents in many places, and the ground is often hot underfoot.

They all walked forward, among the bubbling steam vents.

This stage of development is exemplified by explosive steam vents.

Make small steam vents with the tip of a sharp knife.

Brush egg mixture over top and make steam vents with sharp knife.

Cut one or two slashes in the top to make steam vents.