Thar' She Blows!!

Sand volcanoes are perplexing features.  In researching them this morning, I came across an amazing video--a movie of a sand volcano in the making.  It's on U-tube, little documentation, so I don't know if this is actually a drilled well that is blowing sand out, or if it's natural. (You may need to search around on the linked page to make the video work, but it's an interesting page to explore anyhow!)  The comments posted with it say that this is a "sand injective" or "sand volcano" taking place by the side of the road in Saudi Arabia.  It was taken on a mobile phone and posted on YouTube, original user unknown.  A recommended reference on sand inectites is Hurst, A. and Cartwright, J.A., 2007. "Sand injectites: implications for hydrocarbon exploration and production. AAPG Memoir, Tulsa, 274 p.