The New Light of Hope: Books I to VI.

Chapter X: Arrival.

Aurora:

"We're finally here!" Chestnut announced with triumph. "We made it! We did it!" Antler added in. "All right, everyone, let's get to the bottom and once we do, we'll be going from there." Jemma instructed to everyone.

And that, we did.
...
Once we were at the bottom, the leaders began with going over the changes that were made to the Code of Conduct and we also went over the renaming of each position den and as well as new dens such as the Den of the Co-leading Animals and the Den of the Apprentices, though I can spare you that there was much controversy said by many of the animals who were listening, while some had agreed on the decision. "Now that that's taken care of..." Summer began. "We'll need to split up into groups to find new territories for each Division." She then looked at me and Amethyst and signaled the both of us to continue on with the instructions. "Thank you, Summer." Amethyst said. "We'll group up with all leading and co-leading animals and the healer's as well and whereas for us, we'll join that group with whatever Division you've been assigned with; Chief ArrowHeart, MoonStone, NightStone, Doe, and the rest of the leading and co-leading animals and healer's, apart from StealthHunter, will all be with me, Amethyst and Sadie will be part of the Streams Echoes Division territory search group..." I then went on with discussing each and every search group and the plans for the ones staying behind. Everyone said their goodbyes and then we were off.
...
Amethyst:

We began the search for the Stream Echoes' new territory with our search group, it was important that we did so as well, though Captain RobinPelt came with us as General GrayLight decided to stay behind with the rest of the animals. He had been in charge for what seemed like all the time with GrayLight's health slowly deteriorating and becoming more paranoid, talking with Summer more often than not about whatever was bothering her. I always said to myself: "She just needs someone to talk to in private, that's understandable." Whenever she did so, but now that we were back and with the fact that she unexpectedly passed out in front of Aurora, I was beginning to piece together that something was in fact wrong. Maybe she's sick. I assumed.
Sorry, le- let's just continue forward.

As we searched, I heard something and I pricked up my ears to hear it better. "Hang on!" I ordered, they all stopped, given me a better opportunity to hear the sound-it had sounded like water gurgling and rushing and I heard it coming from my right, somewhere east. A river!

"Do y'all hear that?" I asked. "Hear wha-" just before GrayShine could finish, she too, heard the sound of the river flowing, and so did the rest of the group. "Follow me!" I said.
...
Sadie:

When we reached closer to the sound, we could see a large, yet beautiful river flowing; now the difference between the Northeast River and the Southwest River was that the Northeast River was a bit wider than the Southwest River and to the left of it was a smaller waterfall. But there were no stepping stones for us to get across, so we would have to swim in order to get to the other side of the riverbank. "Ain't no silly body of water gonna stop us now." Amethyst said with confidence, tempting to cross the river. "Uh, Amethyst, I'd be careful if I were-" Amethyst stepped closer to the edge, only to slip and loose her balance, resulting into her fallen in the river, and apparently the river was deeper than the Southwest River too. "Amethyst, no!" RowanFoot yelled.

Shortly after, we noticed Amethyst reach the surface and rushed to help her as she gasped for air and swam towards the shore, sinking her claws as deep as she could into the Earth. "That... was a big... mistake!" She rasped, coughing up water in between each sentence. "Well, perhaps you'll listen to us next before you continue." Chief TimberHeart told her as both him and I helped her get back onto the surface, water dripping from her entire body. We stood back as she shook off the excess water off of her body. "Got any better ideas?" Amethyst asked Chief TimberHeart. "Well, we'll have to swim across, but we'll have to be careful when doing so." He said, looking at her sternly. "All right."