Quickly shock and hack the RPG Turret inside the entrance to Rolling Hills and use Telekinesis to gather up the items scattered around the area atop the beams and on the waterfall. Descend the stairs to Lower Rolling Hills—the entrance to Rapture Metro is just up ahead. If only it was going to be that easy…
Objective 2: Find Julie LangfordRyan has killed off all of the plants in Arcadia in an attempt to suffocate you. This has also sealed all the exits out of Arcadia. Atlas believes that the only person who might be able to stop him is a botanist named Julie Langford. Find Langford in her labs just beyond Rolling Hills. 
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Make your way past the Security Camera to the west and go through the first door towards Julie Langford’s Research Laboratories. She’s not about to buzz you in just yet; first you’re going to have to help her revive the trees by finding a rose for her. It’s time to search Waterfall Grottos.
Objective 3: Collect a Rose SpecimenMaster botanist Julie Langford has a way to restore the trees and has asked you to find a specimen of Rosa Gallica. Go to the Waterfall Grottos and collect a specimen for her. 
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Little Sister Encounter
Big Daddy: Rosie
You’ll soon encounter a mob of angry Thuggish Splicers who think you have something to do with the sudden death of the trees. There’s also a Big Daddy and Little Sister in the area too! Hit the pipe-wielding maniacs with the Enrage plasmid to sic them onto the Rosie guarding the Little Sister. They’re not going to last long against Rosie’s Rivet Gun, but they’ll distract it long enough for you to get in some shots with the Shotgun or Grenade Launcher.
Strafe around the central area, using the dying trees for cover and focus on avoiding Rosie’s Proximity Mines. Electro Bolt 2 comes in handy here, since it shocks Rosie long enough to get several Shotgun blasts in with the Exploding Buck selected. Finish it off with Armor-Piercing ammunition.
Head back through Rolling Hills to the Arcadia Glens area and follow the signs towards Waterfall Grottos. Approach the first door on the right and quickly take a photo of the four Thuggish Splicers in the room hacking away at the Houdini Splicer corpse. Kill off the Splicers and grab the Security Evasion tonic from the ground—it should come in handy really soon, so go ahead and equip it. There’s a U-Invent machine off to the left with a corpse nearby that has a wealth of valuable invention components. Craft some more items, then head down the stairs to the right.
