Each two-part guide includes 1:25000 maps with photographs and detailed walk descriptions indicating things of interest along the route, and information about time, distance and degree of difficulty.  Few walks come into the strenuous category - these guides are ideal for the casual walker.

This guides includes an introduction and descriptions of 20 walks throughout the Algarve.  Few maps are included, the text is your guide.  A short summary with photograph of each walk helps you to determine which to try.
"20: An Old Frontier
A gentle stroll by the Guadiana river, which marks the once battle-weary, now utterly tranquil, border between Portugal and Spain."