  To date, the study of high-magnification gravitational lensing effects of
galaxy clusters has focused upon the grossly distorted, luminous arc-like
features formed in massive, centrally condensed clusters. We investigate the
formation of a different type of image, highly magnified yet undistorted, in
two widely employed cluster mass density profiles; an isothermal sphere with a
core, and a universal dark matter halo profile derived from numerical
simulations of Navarro et al. We examine the properties of images of extended
sources produced by these two cluster profiles, paying particular attention to
the undistorted images. Using simple assumptions about the source and lens
population, we estimate the relative frequency of occurrence of highly
magnified, undistorted images and the more commonly known giant arcs.
