steam peak
31Geology of the Lassen volcanic area — The geology of the Lassen volcanic area presents a record of sedimentation and volcanic activity in the area in and around Lassen Volcanic National Park in Northern California, U.S.. The park is located in the southernmost part of the Cascade… …
32Metropolitan line — Metropolitan Colour on map Magenta Year opened 1863 Line type Sub Surface Rolling stock A Stock and S Stock 8 carriages pe …
33District heating — Biomass fired district heating power plant in Mödling, Austria …
34Narrow gauge railway — Track gauge by size Broad gauge St …
35Energy development — Schematic of the global sources of energy in 2006 2007 …
36Railways in Melbourne — Melbourne rail network  City Loop  Caulfield group  Frankston line  Pakenham line  Sandringham line  Cranbourne line …
37United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
38Fossil-fuel power station — A working coal plant in Rochester, Minnesota The St. Clair Power Plant, a large coal fired ge …
39Mount St. Helens — This article is about the volcano in Washington State. For the 1980 eruption, see 1980 eruption of Mount St. Helens. For the mountain in California, see Mount Saint Helena. Mount St. Helens …
40Solar thermal energy — Solar thermal system for water heating in Santorini, Greece …
