The Finest Rhinard Cannon is one of the more unusual weapons in Crimson Desert. It functions as a heavy impact spear in melee but also fires an infinite cannon shot through its stab attack, giving you ranged damage without needing to swap to a different weapon. The game never points you toward it — it's locked inside a hidden dungeon called Wyvern's Sanctum, and reaching the chest requires solving a small puzzle and dodging a set of traps.
Quick answer: Travel to the Abyss Nexus northwest of the Three Brothers Cliff area in the Delesyia region, head northeast along the cliff edge toward a visible fortress, drop into the tunnel below it to enter Wyvern's Sanctum, light two torch sconces to open the locked door, dodge the saw blades, pull the wall handle at the far end, and loot the treasure chest inside the secret room.

Reaching Wyvern's Sanctum in Delesyia
Wyvern's Sanctum is in the far southwest of the Delesyia region, near Dewhaven. The easiest reference point is the Abyss Nexus located in the northwest portion of the Three Brothers Cliff area. From that Nexus, head northeast and follow the cliff edge as it curves around. You'll eventually spot a fortress rising above the terrain. Enter the fortress area and look for a tunnel opening you can drop down into — that's the entrance to Wyvern's Sanctum.
Before heading out, stock up on Palmar Pills and food. The journey to the dungeon can be rough, and having your stamina at level 5 or higher makes the trip significantly more manageable. The weapon is not locked behind any quest or boss fight, so you can grab it early if you're willing to make the trek.

Navigating the dungeon obstacles
Once inside Wyvern's Sanctum, you'll face two obstacles before reaching the chest.
Step 1: Shortly after entering, you'll encounter a small door that won't open when you interact with it directly. Look for two wall-mounted torch sconces positioned on opposite walls near the door. Light both of them to trigger the door to open.

Step 2: Past the door, a row of saw blades sweeps back and forth across the corridor. Watch the pattern for a moment — the blades move to one side and then return. Wait for them to reach the far side, then sprint through the gap immediately. The timing window is fairly generous once you've read the rhythm.

Step 3: After clearing the saw blades, proceed to the far end of the room. On the left side of the wall, there's a handle. Pull it to open a hidden door, revealing a small chamber with the treasure chest inside.

Step 4: Open the chest. You'll receive the Finest Rhinard Cannon along with one Palmar Pill as a bonus reward.

How to fire the Finest Rhinard Cannon
The shooting mechanic on this weapon is not immediately obvious, and many players pick it up without realizing it has a ranged attack. The cannon fires through the stab input — use the same button you'd use for a standard thrust attack while the weapon is equipped. On a controller, you can also hold block (L3) and then press heavy attack (RT) to trigger the shot. Both methods work, so use whichever feels more natural in your combat flow.
The cannon fire is infinite, meaning there's no ammo count or cooldown limiting how often you can shoot. You get unlimited ranged damage baked into a melee weapon, which makes it a strong utility pick even if its raw damage doesn't match some of the game's heavier two-handed options.

Weapon details and compatibility
| Detail | Info |
|---|---|
| Weapon type | Heavy impact spear (with cannon functionality) |
| Ranged attack | Infinite cannon fire via stab input |
| Usable by Kliff | Yes |
| Can be paired with other weapons | Yes — you can equip sword and shield alongside it and switch freely |
| Sell value | 10.08 silver |
| Location | Wyvern's Sanctum, southwest Delesyia |
Kliff can equip the Finest Rhinard Cannon, making it one of the few firearm-style weapons available to him. You don't have to sacrifice your other loadout to use it either — equipping a sword and shield in your primary slot and then switching to the cannon mid-combat works without any conflict.
Alternative way to get a Rhinard Cannon
The "Finest" version from Wyvern's Sanctum is the highest-quality variant you can find in a chest, but a standard Rhinard Cannon can also be crafted at a blacksmith. The recipe likely comes from one of the crafting books scattered throughout the world, and the material cost is relatively low. If you don't want to make the dangerous trip to Delesyia early, crafting a basic version is a viable alternative until you're ready to grab the Finest variant.

The Finest Rhinard Cannon won't top the damage charts compared to dedicated two-handed weapons, but the combination of spear-range melee and unlimited ranged shots makes it one of the more versatile picks in Crimson Desert. It's worth keeping in your inventory even if it doesn't become your primary weapon — having a free ranged option on demand is hard to pass up.