Invest in Debt
Old recreational lots are fun to explore. Many were never built on and were located in scenic, woodsy places. Over time rain and snow has washed out roads and the growth of plants and trees has hidden corner markers. Developers often used re-bar stakes to mark the corners and this soft iron will have rusted to match the soil. Surveyers cut brush lines to lay out the lots and these will now be closed off with new growth. Windblown dust accoumulates over the years and markers are frequently buried. It can be real hard to be sure where you are.
Finding corners has probably gotten easier these days, although I haven't tried out any of the new tools. Were I to get an urge to do so, I would get a GPS unit and a metal detector. With a copy of the plat map I could find my way into the subdivision and the GPS should get me close to corners. At that point the metal detector could be used to locate buried iron markers.
In preparation for such an adventure I would check the online mapping services. They would probably help with navigation to the general area, but not be useful for much more. For some reason the imagery for these remote locations is usually low resolution and out of date.
This land can be very remote. More remote than you would imagine if you haven't experienced it before. It is quite possible to be twenty miles from the nearest power line. At night the sky is completely dark and you can see the stars and the Milky Way. If you are camped out you will probably hear coyotes howl. I have spent the 4th of July weekend with my family in these places and never seen another person the while weekend.