Editing Volcanic plug (section)

=== North America and the Caribbean === 

There are several volcanic plugs in the [[United States]], including [[Morro Rock]] in [[California]], Devils Elbow located in the [[Heceta Head Lighthouse]] Scenic State Park on the [[Oregon]] coast, Thumb Butte in the [[Sierra Prieta]] of Arizona, and [[Shiprock]] in [[New Mexico]]. [[Devils Tower]] in [[Wyoming]] and [[Little Devils Postpile]] in [[Yosemite National Park]], California, are also believed, by many [[geologist]]s, to be volcanic plugs.  In Canada, the [[Northern Cordilleran Volcanic Province]] gives rise to several confirmed and suspected plugs. Chief among these is [[Castle Rock (volcano)|Castle Rock]], located in [[British Columbia]], which last erupted during the [[Pleistocene]].  The southern coast of [[Saint Lucia]] is dominated by the iconic [[Pitons (Saint Lucia)|Pitons]], a [[UNESCO]] [[World Heritage Site]]. The twin peaks, Gros Piton and Petit Piton, steeply rise more than {{convert|770|m|ft}} above the [[Caribbean Sea|Caribbean]].