Simplify the following text for a Grade 10 native English-speaking person.
Original: The new rail crossing was built adjacent to the road which took South Koreans to KÅ mgangsan , a region that has significant cultural importance for all Koreans .
Simplified: The new rail crossing was built next to the road which took South Koreans to KÅ mgangsan , a region that has significant cultural importance for all Koreans .