11. That's why Siebe and his associates grew nervous in 1993, when the volcano's steam vents started hissing ominously. 12. Gently make steam vents in the top of the pastry and bake at 350 degrees for 20 minutes. 13. Climbers still are not allowed inside the crater because of the dangers of slides, rockfall and steam vents . 14. While dessert cooks, guests return to the living room to inspect microwave casseroles with steam vents and other items. 15. Transfer empanadas to baking pan and cut a few small slits in top of each empanada to create steam vents . 16. Place the circle of pastry over the top and cut a few 3-inch slits here and there for steam vents . 17. Lassen has geologic features similar to Yellowstone's _ steam vents and boiling mud pots _ though on a smaller scale. 18. A teen-age boy in our group reveled in ignoring the numerous warning signs to stay well back of the steam vents . 19. The Long Valley Caldera hosts an active hydrothermal system that includes hot springs, fumaroles ( steam vents ), and mineral deposits. 20. However, by 1992, although there were 25 solfataras, a boiling hot spring and several steam vents , no eruption had taken place.
