Horizon Forbidden West Greenshine Slab Locations And Upgrade Guide

Hunting for rare upgrade materials across the ruins of the Forbidden West is a thrilling part of Aloy's journey. Among these precious resources, Greenshine Slabs are the most valuable and difficult to locate due to their remote positions. Knowing where to search for these legendary crystals will allow players to maximize their gear performance efficiently.
High Altitude Mountain Peaks
Many of the legendary slabs are hidden on the highest mountaintops that overlook the dangerous wilderness. Players will frequently need to utilize a flying mount late in the game to reach these isolated rocky crests safely. For example, exploring the steep cliffs located directly west of Redhew Quarry will reveal a valuable slab resting near the summit.
Another notable location can be found on the very peak situated directly above the entrance to Cauldron Kappa. Scaling these frozen mountain ranges requires patience and careful scanning with Aloy's Focus to catch the green glow. Keeping track of these high-altitude spots ensures you collect the resources needed for endgame progression.
Submerged Secrets and Sunken Caverns
If you prefer diving into the deep waters, several pieces of this material can be recovered from ancient lakes and coastal areas. You will need the diving mask to explore the deep aquatic environments without running out of oxygen. A reliable place to look is at the bottom of the lake situated just north of the Salt Bite settlement.
Deep underwater explorers can also find a crystal hidden beneath a broken Deathbringer machine near Jagged Deep Delve. These sunken treasures are often guarded by dangerous aquatic machines like Snapmaws or Tiderippers. Navigating these deep pools carefully allows you to expand your crafting inventory substantially.
Ancient Ruins and Old World Structures
The remnants of humanity's past structures serve as excellent hiding spots for legendary crafting materials. Dilapidated skyscrapers and rusted satellite dishes frequently hold these valuable resources near their upper framework. Players can glide from the highest points of Plainsong to reach a decrepit satellite dish holding a slab to the northeast.
Additionally, exploring the ruined towers near the Hoover Dam at the far southwest tip of Jagged Deep lake yields great rewards. Many of these industrial zones require specific tools like the Vine Cutter or Ignitor to bypass blockades completely. Investigating these complex architectural puzzles ensures your arsenal remains fully prepared for tougher combat encounters.
Maximizing Your Weapons and Outfits
The primary purpose of collecting these legendary crystals is to unlock the final upgrade tiers for your best gear. High-tier outfits such as the Carja Trader armor require multiple slabs to reach their maximum defensive potential. Investing these resources into your favorite bows drastically increases your damage output against heavy machines.
Using the workbench system to create active jobs is a smart strategy to track down any missing materials across the map. This custom tracking feature marks a general search area on your map based on the closest available resource. Managing your upgrades wisely will give Aloy a massive advantage during the final story missions.