Landsat TM image taken in July, 2000.  The boundary of preserve was masked to remove the portion of the image not controlled by the National Park Trust.  Observe the amount of bare ground, depicted by the light browns, in the image.  July, 2000 was in the middle of a dry season and you can see that the grazing affects were quite large.  The area in the top of the photo is especially heavily affected, whereas the areas in the lower right of the image were not as affected.  The white areas in the photo that appear to follow the contours are limestone outcrops.  Landsat TM Bands 1,2,7.