1)
Why does it say "va'Ya'al"?
1.
Radak: From Sha'ar Beis Hashem it traveled into the city. It departed from the city and returned to its place ? Shamayim.
2)
Why does it say "me'Al Toch ha'Ir"?
1.
Radak: He saw it above the ground ? "va'Yeromo Min ha'Aretz l'Einai" (10:19).
3)
Which mountain is east of the city?
1.
Rashi, Targum Yonasan: It is Har ha'Zeisim; this was the third journey.