You are in luck, RuneScape 3 adventurers! Here are four gold-making techniques you can use. Whether you prefer AFK or active gameplay, these techniques will give you between 6 and 20 million RuneScape Gold per hour. 

• Crafting Dinosaur Propellant
• Fletching Asry Bolts
• Killing Lava Strykewyrms
• Big Game Hunter (Skilling Method)

↖ Crafting Dinosaur Propellant

Profit: ~10 mil/hour

Requirements: 95 Firemaking, Extinction Quest completion

Location: Piscatoris, access via Potterington Farm

Method:

• Use the Mystical Tree teleport to reach Bill's Experimentation area.
• Start the mini-game at the Storm Barn. Feed Rex creatures at four different troughs located nearby.
• Pro Tip: Feed all four troughs before processing the Potterington blend for maximum yield.

↖ Fletching Asry Bolts

Profit: ~6 mil/hour

Requirements: 80 Fletching, Bow of the Gods, Tier 2 Rangers' Workroom

Location: Rangers' Workroom

Method:

• Combine Hydrix bolt tips with Ascension bolts.
• Utilize Portable Fletchers and Fletching Skill Cape for extra bolt production.
• AFK-friendly: 100 seconds per batch.
• Optional: High Alchemy for additional profit.

↖ Killing Lava Strykewyrms

Profit: ~12 mil/hour

Requirements: Level 94 Slayer, Wilderness Sword 4

Location: Level 35-40 Wilderness, near Lava Maze

Method:

• Target dark mounds for Lava Strykewyrms.
• Collect searing ashes, avoid their underground attack.
• Opt-out of PvP for safety.

↖ Big Game Hunter (Skilling Method)

Profit: ~10 mil/hour

Requirements: 80-90 Hunter, 70 Slayer

Location: Anachronia

Method:

• Hunt mid-tier dinosaurs using specific baits.
• Utilize Mobility skills and items like Double Surge and Mobile Perk.
• Craft and use ballistas to take down dinosaurs.
• Collect valuable loot including tribal fin, volcanic fragments, and superior long bone.

Conclusion:

Whether you're a seasoned player or just starting, these methods offer something for everyone. Remember, the key is consistency and adapting to the market.