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July 11, 2014.  approximately 08 hours UT.

Giant prominence (about 122,000 km) on limb SW. Note the huge track (very, very weak) that takes place in a southerly direction (up).

I think it is a coronal loop.

 

(Freely adapted from Wikipedia & Internet)

Coronal loops  form the basic structure of the lower corona and transition region of the Sun. These highly structured loops are a direct consequence of the twisted solar magnetic flux within the solar body. The population of coronal loops can be directly linked with the solar cycle; it is for this reason coronal loops are often found with sunspots at their footpoints. The upwelling magnetic flux pushes through the photosphere, exposing the cooler plasma below. The contrast between the photosphere and the solar interior gives the impression of dark spots, or sunspots.

 

 

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