The Valley of the Geysers is one of ___ five places on Earth where hot springs punch holes through the Earth’s crust to eject boiling water.

The area ___ of some ninety geysers and hundreds of thermal pools, steam jets and mud pots.

The natural ___ was obliterated by a massive landslide.

The Kamchatka area is a controlled nature reserve ____ to observe natural processes.

The river’s natural ___ was destroyed.

Fish farms were ___ in order to help repopulate the water.

The Beluga sturgeon has ___ the river for hundreds of years.

The fish are able to ____ naturally in the cleaner water.