A very bright active prominence in the form of a loop above the site of a large flare, seen on the Sun’s limb in Ηα‎ light. A series of loop prominences usually appears during and after a large flare, progressively larger loops forming above one another. The smaller, earlier ones eventually fade from sight after an hour or so. The maximum height attained is 100 000 km, and a complete loop prominence system may last more than a day. X-ray loops, observed simultaneously on occasion, are located on the outer edge of Ηα‎ loops, giving the impression that loop prominences somehow condense out of the hot coronal material. However, their presence may also be due to the rapid evaporation of denser plasma from the chromosphere into the magnetic field of the prominence following the release of the flare energy.