SF and DL zonelines are flat and roamer-free, just gotta watch out for trees. i believe the corridor leading from BW proper to the chardok area is clear. if you need a big, empty space, try the flat & grey area just south of the northwest crater. you can generally see roamers coming from a ways off and prepare. but even if you do aggro a roamer, chances are it won't be a caster
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