Welcome to the Alienation Zone
Yes. Most people enter through the entrance to the Alienation Zone of Chernobyl at KPP Dytyatky, Ukraine. It marks the beginning of the 30 km contamination zone. This is where you need to show your papers (passport, permits) for the first time. Also, this is your final contamination check on your way out. There is also a 10 km contamination zone which was more contaminated, and you need a separate permit for that.
кпп (KPP) stands for контрольно-пропускной пункт [1], which roughly means temporary control point. Dytyatky is the village name where this KPP is located. People still live in Dytyatky, but living within the zone is officially forbidden.
You can enter the zone illegally on a boat, too. [4] ISO 200, 18mm, f/8.0, 1/1600s.