فَمَا ٱسْطَـٰعُوٓا۟ أَن يَظْهَرُوهُ وَمَا ٱسْتَطَـٰعُوا۟ لَهُۥ نَقْبًا ٩٧
So they [i.e., Gog and Magog] were unable to pass over it, nor were they able [to effect] in it any penetration.
Your location stays on this device and is only sent, rounded to about 1 km, to fetch the times.