Volcanoes are many different shapes and sizes. They can be dormant or active. Students will learn about the different kinds of volcanoes and discover what makes a volcano erupt.

*CLICK HERE to download sample hikes from Day Hiking Mount St. Helens* 80 day-hiking routes, summit routes, camping options, and more General details on visitors’ centers and nature trails along each of the four major Monument access roads Popular winter trails also included Whether you just want to stretch your legs on a short interpretive trail near the visitors’ center or you’re looking for an uncrowded backcountry route on the side of an active volcano, Day Hiking: Mount St. Helens will help you select the adventure you’re looking for. This addition to the popular "Day Hiking" series includes a new feature: hikes of less than 3 miles—nature and interpretive trails—that are featured in short write-ups, without a point by point description or map. They are a bonus to the meat of this collection of the best trails on Mount St. Helens and in the surrounding forests. The guide also includes photos, maps, descriptions, and driving directions to all the longer trails, indicating those with camping sites and opportunities to link hikes for multi-day adventures. The book is organized according to the mountain’s aspects—east side, west side, south side, or north side, which is how many people explore it. **Mountaineers Books designates 1 percent of the sales of select guidebooks in our Day Hiking series toward volunteer trail maintenance. For this book, our 1 percent of sales is going to Washington Trails Association (WTA). WTA hosts more than 750 work parties throughout Washington’s Cascades and Olympics each year, with volunteers clearing downed logs after spring snowmelt, cutting away brush, retreading worn stretches of trail, and building bridges and turnpikes. Their efforts are essential to the land managers who maintain thousands of acres on shoestring budgets.

The book describes the Ankarana plateau and its cave network in Madagascar, depicting the natural environment of the Plateau as well as the natural processes which created the cave network of more than 100km with many galleries, some are very large and draped with different cave formations and underground rivers are inhabited with crocodiles and giant eels.This place is famous for its surface landscape formed with tsingy, natural needles formed by the weathering of limestone. The Ankarana is surrounded by native Madagascan rain forest inhabited with lemurs and it was a natural shelter for the Ankarana people whose kings were buried in caves. The cave system has been partially explored since the sixties and exploration is still in progress. The book includes several maps (geology, topography, hydrology), the survey of the caves and a brief description of the Ankarana Kingdom.

Shallow subterranean habitats (SSHs) are areas of habitable space that are less than 10 m in depth from the surface. These range from large areas such as shallow caves and lava tubes, to tiny areas such as cracks in ceilings, or spaces in soil. Whilst being very different in many ways, they are often bound together by shared characteristics of the habitats and their faunas, and their study can help us to understand subterranean habitats in general. This book concentrates on the more typical SSHs of intermediate size (seepage springs, spaces between rocks, cracks in lava etc.), describing the habitats, their fauna, and the ecological and evolutionary questions posed. Similarities and differences between the habitats are considered and discussed in a broader ecological and evolutionary context. The book is mainly aimed at students and researchers in the field of subterranean biology, but will also be of interest to a wider range of ecologists, evolutionary biologists, freshwater biologists, and conservationists. There will also be an audience of environmental professionals.

Environmental issues are high on the public agenda and engineering projects need to take environmental concerns on board. Volcanic Rocks, contains papers from the ISRM Workshop W2 (Ponta Delgada, Azores, Portugal 14-15 July 2007), and focuses specifically on problems associated with construction activities in areas of volcanic rock. Volcanic Rocks highlights novel approaches and solutions to engineering problems in volcanic areas, covering a variety of topical themes, which include: characterization of volcanic formations; case studies; construction materials; earthquake engineering and rock dynamics; foundations; slope stability, and tunnelling.