そこなら

if it's there

→ そこ
phrase Uncommon #8,430
if it's there そこ means “there” or “that place,” and なら adds a conditional meaning such as “if it’s...” or “as for there...”
JA: そこなら、荷物を置いても大丈夫です。
EN: If it’s there, it’s okay to leave the luggage.

そこならわかる

I know where that is.

— Брат 2 (2000)

たぶんそこなら置いて大丈夫だそこは今年掃除したからね

It should probably be okay to put it there, since I cleaned that area this year.

— ビッグ・シック ぼくたちの大いなる目ざめ (2017)

そこならもう何年もに行ったよ

I've already been there, years ago.

そこなら安全だ

It's safe there.

— クワイエット・プレイス (2018)

そこなら簡単に逃げられる

You can escape easily from there.

— ラスト、コーション (2007)