There's no border SSW of Shmona, not till you get to Egypt, and I'm pretty sure Avivim is on the border. The options are SW, clockwise, to SE.
Not saying you're wrong, instead, trying to nail down Avivim's location, since early this AM as a matter of fact.
:-)
http://www.canaan.co.il/tourism/zimers/z_meron.html