「ここ、覚えてる？」「集団登校の待ちあわせ場所だな」

「、？」「」

"Remember this place?" "It's the meetup spot for the group walk to school, right."

Literal

Here, remember-[ている]? / Group-going-to-school [gen-の] meetup spot is [right-な].

集団登校 ('group commute to school') is a specifically Japanese institution: in elementary school, students in the same neighborhood walk together to school under the supervision of older students or parents for safety. 待ちあわせ ('meeting up') is a noun from 待ち合わせる, referring to pre-arranged meeting locations. 覚えてる is the casual 覚えている contraction. Final な seeks agreement with nostalgic tone.