Natzu River is one of the three possible landscapes of Natzu in Oracle of Seasons. The region of Natzu will vary, depending on which Animal Companion Link has acquired. Natzu River will only exist if Link has Dimitri as a companion. If Link has Ricky, then there will be the Natzu Prairie. With Moosh, it will be the Natzu Wasteland.
The Natzu River covers a large amount of water in the center part of Holodrum. To the South, it borders North Horon, Eyeglass Lake, and a small portion of the Holodrum Plain. To the west and north lies the Temple Remains. Also to the north, the Goron Mountain can be found. To the east, Link will find Moblin's Keep, which Link must travel through to reach the Sunken City. At the northeast corner of the region, a small portion of Natzu River connects with Mt. Cucco.
Natzu River features deep waters along a few small island regions. In the south part of the region there are strong water currents that dictate the area that Link can swim. The water, and in particular the waterfall region will require Link to uses Dimitri's strong swimming ability. Throughout the region, Link will encounter a number of enemy Goponga Flowers and Water Tektites. Dimitri can swallow the enemy Goponga Flowers as he encounters them.
Link can initially reach the Natzu River from three different routes. At the northeast corner of North Horon, there is path that leads to the River and Link will need to use Dimitri to swim along within these strong currents. Alternatively, at the northwest corner of North Horon, Link can use Roc's Feather to leap over a small hole and enter the region. Link can also enter the region via the western portion of Natzu River via a pathway at the northeast portion of the Holodrum Plain.
Whether Link is traveling through Natzu River, Natzu Prairie, or the Natzu Wasteland, he will encounter three different caves along his journey. The caves are all identical, but their actual locations will vary, depending on which region Link is in.
At the east portion of the River, there is a waterfall that Dimitri can swim up. Inside, Link will find a Deku Scrub. If Link speaks with the Scrub, he'll find that he loves seeds and also loves singing. If Link agrees that the song he sings is a great song, the Deku Scrub will fill up all of the seeds in Links Seed Satchel.
After Link has learned the Deku Secret from the Deku Scrub found in the Deku Forest within Oracle of Ages, he can return to this cave in Oracle of Seasons. After telling the Deku Scrub in the Natzu region the Deku Secret, the Deku Scrub will upgrade the carrying capacity of Link's Seed Satchel. The upgrade will boost Link's carrying capacity to 50 seeds or 99 seeds, depending on whether he has acquired the first upgrade.
The third cave in the Natzu region does not differ, regardless of which terrain of Natzu is present. This cave is located on a narrow strip of land at the base of Goron Mountain. Link will need to swim over to this small area of land to access the cave. Inside, Link can cross a trio of moving platforms to reach a Treasure Chest that contains 50 Rupees.
At the north end of the Natzu River, there is a small staircase that leads up to the Goron Mountain. With Dimitri, Link will gain early, albeit, limited access to the Goron Mountain and Mt. Cucco. All that can be reached from here is a dead-end cave, as well as a secret Soft Soil location.
- Link can reach the Natzu region before ever encountering any of the Animal Companions. If he does so, Natzu Prairie will be the default season.
- Natzu is one of the few regions in Oracle of Seasons that does not have a Tree Stump. Thus, it remains Spring at all times. Ironically, the term Natzu is derived from the Japanese for Summer.
- In Oracle of Ages, the Nuun Highlands have similar characteristics as the Natzu region in that the landscape will different, depending on which Strange Flute Link has acquired.
Waterfall with Deku Scrub.