The path from the secondary entrance leads to the largest lake, KoZjak Lake, and forms a boundary between the upper and lower lakes. The upper lakes are seperated by dolomite barriers, surrounded by dense forests and interlinked by several gushing waterfalls. The lowers lakes were formed by cavities created by the water of the upper lakes. Most of the water comes from the Bijela and Crna rivers and pool in the Proscansko Lake. There are 16 lakes in the park, all connected by well designed wooden walkways and trails.
View Plitvice Lakes National Park in a larger map
To get in: seach timetable with autobusni kolodvor, the station of the Plitvice Lakes National Park is Plitvička Jezera. Another searchable timetable is Liburnija Zadar, if you are departing from Zadar (Croatian only). There are discrepancies from two search engines, it is highly recommended to re-confirm the bus schedules with the bus stations. To get out: If the bus is not full, it will take on more people. Bus schedules are posted at information stations near both entrances to the park.
Ticket: if you are staying in one of the hotels in the park, buy a one day ticket and have your hotel stamp on it that will give you unlimited access to the park and all transportation in the park during your stay.
There are many routes in the park (maps) and all are well-marked. You can choose one that fits your schedule and an easy way to see all the lakes and waterfalls is to take a shuttle bus to Okrugljak Lake at the top (St4) and then walk down (red line). Take a boat at P2 to P3 (green line) and then red line to St1. Take a shuttle bus back to St2 where the hotels are located. (Google map above)
Plitvice Lakes National Park official website: http://www.np-plitvicka-jezera.hr/eng/index.php