This photograph shows the entrance to Carlsbad Caverns (New Mexico). What type of rock are the caverns formed in, and what chemical weathering processes formed them? [Source]
What process created these distinct rock formations in Joshua Tree National Monument (California)? Describe it. [Source]
The light-colored areas in this photograph of the Santa Susana Mountains (California) are the scars of mass movements triggered by the Northridge earthquake that struck Los Angeles in 1994. What type of mass movement do you think these were? Explain. [source]
What type of mass movement is shown in this photograph? What obvious human landscape modification has created or enhanced the risk of this type of mass movement hazard? [Source]
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