1.   Extinct volcanoes are those that have not erupted in historic times.

2.   The lake is at the foot of an extinct volcano.

3.   A further several thousand extinct volcanoes on land are known from their form, structure or characteristic rock types.

4.   Both teams independently made their discovery using telescopes atop the extinct volcano, Mauna Kea, on the big island of Hawaii.

5.   But now that these deposits are being depleted by mining, he said, prospectors are paying more attention to lesser amounts of gold found in extinct volcanoes.

6.   For this extinct volcano extracts its admission fees in the currency of sweat and sunburn.

7.   It is popularly known as the Punchbowl, a reference to its location in a extinct volcano crater.

8.   Medicine Lake, set high in the crater of an extinct volcano, is now producing the best fishing for large brook trout in California.

9.   Or visitors can disembark at Bella Coola and travel inland to see villages with Norwegian history, western adventures, wilderness resorts, extinct volcanoes and guest ranches.

10.   Seafaring Muslim rebels who kidnapped Christians for ransom were refusing to disarm, defiantly taking refuge behind the steep mountain walls of an extinct volcano.