It maps out your strongest zones of influence according to your planetary positions at birth. It's great for people who want to travel and explore themselves as well as their environments. You must have your exact time(within twenty minutes) and place of birth for these maps to be accurate.

The straight lines(yellow and purple) are where your planets are at their apex of power(MC), and where you are most likely to achieve some level of recognition or prominence according to the planet involved. The curved lines(red and green) are where your planets have their most powerful personal influence(Asc), and are where you will express powerfully some aspect of your personality according to the planet involved.

Line crossings(intersections) are especially powerful zones where you will experience more than one planetary influence at the same time. The entire lattitude of such a crossing echoes the influence. The most powerful zones of all are where all the lines meet in the extreme northern and southern lattitudes, but they are generally out of reach and its probably best that way(too much power).

Venus and Jupiter lines are the most pleasant and prosperous, where money and status come easily. Sun and Moon lines give prominence and popularity. Mercury lines are good for study and work. Mars is good for activity of all kinds such as sports and sex, but it can also bring violence. Saturn is where you learn discipline and control. Uranus lines are exciting but chaotic. Neptune is mystical and deceptive. Pluto is where you undergo intense transformations. Venus/Mars and Venus/Pluto crossings are highly sexual. You can win the lottery under a Jupiter/Pluto crossing. Mars/Jupiter crossings are great for sports and adventure, Venus/Jupiter for wealth, Moon/Venus for family life, Jupiter/Neptune for spirituality, Uranus/Pluto for revolutions, and so on.

Astrolocality teaches us that there is a place and time for every aspect of our being. You can sit there and wait 360 years for all of your potential to unfold, or you can take a trip and make it happen right away. It's all in the circle and how much of it you're exposed to. Like a web, you affect different parts of the planet and they affect you, all according to your planetary pattern. By becoming concious of your pattern and where and when(progresions and transits) they will most likely be played out, you can take control of your life and destiny.

If you want your own cartography map, there are many astrological sites on the internet who offer this service. I highly recommend Astro-Carto-Graphy and AstroNumerics.