Your looking for an unusual cache.
Park in the layby, but please be careful when getting the cache its not in the layby. The traffic thunders by at great speed and can drag you into the road in there wake.
Again please be carefull. not advised to let the geokids go for this one.
Qba'g uvg lbhe urnq ntnvafg gur JNYY tbvat AHGF gelvat gb svaq guvf bar.