It is a proverb and it means; People are lively creatures. Mountains cannot move but people can. Friends can meet and see each other one day in spite of the distances and difficulties which can make it hard to come together.

:)) Yes! Into Russian: Гора с горой не сходится, а человек с человеком сойдётся Into O'zbek: Tog' tog' bilan uchrashmaydi ammo inson inson bilan uchrashadi

When the circumstances are impossible to make people meet, there is despair. Upon some new happenings, they happen to meet somewhere sometime though it looked impossible before. So we say "dağ dağa kavuşmaz, insan insana kavuşur". This proverb emphasizes on the impossibilities and the hopes.

world is small, may be in life you come across someone you recognize in the past.