[quote=ASTA]
Judging from this, it sounds like the junkyard is comprised of literal mountains of trash. Uneven terrain doesn't deter armored vehicles as much as people think. If the junkyard is an expansive landscape of small mounds of junk, petite hills and potholes, tanks and light vehicles (like APCs, IFVs and mobile gun systems such as the M1128) aren't going to have much issue with such a landscape. If the tank's weight is an issue (which it shouldn't be, considering that machines weighing in excess of 50 tons are present in the world), then the tracks can be widened to decrease the vehicle's overall ground pressure at the expense of overall speed. Mountains are going to be a hindrance to anything that tries to maneuver through them, though walking machines will have the capacity to climb these hills far better than a wheeled or tracked vehicle can (but only to a certain extent, as their overall mass coupled with their poor center of gravity will inevitability cause them to tumble backwards should they scale the mountain too far---unless of course they have arms or something, or if they possess four or more legs and are lower to the ground). This is all technical stuff, and probably shouldn't be brought to the table since this RP appears to be more about fun rather than plausibility.As Spoo said, it's all about the aesthetics. If I bring physics and actual science into this, it's going to ruin the party for everyone---including myself lol.
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You're right about the physics, yeah, at least with the vehicle size and the like(Tanks being more stable than mobile armor, mobile armor with multiple legs being more stable than mobile suits, etc). However, you asked about the terrain, and how the landscape looks like. The entire place looks like a combination of a warzone and a planetary bombardment. Much of the huge chunks of metal are rusted out hulls of tanks or mecha from eons past, with parts being scattered far and wide. Occasionally, there will be the destroyed remains of a landship or even some sort of massive-spacecraft, with metal chunks and 'bits'. There is so much metal wreckage that it is nearly impossible to see a five foot free space anywhere unless artificially cleared, in the cases of city-states and hubs, with special attention given to the oasis's which have some greenery in addition to the towering buildings. The main landscale is hilly with metal, but again, it's relatively unstable and mountains of the stuff are not uncommon.