Muddy Keys

All you need for this method is some cash to buy a few muddy keys this method makes you a consistant 300k an hour
i do recommend you bring a gem bag since you get alot of gem drops

Located in the center of the Lava Maze, the muddy chest contains an uncut ruby, a mithril bar, a mithril dagger, an anchovy pizza, 10 chaos runes, 2 law runes, 2 death runes and 50 coins. Opening it consumes a muddy key. It is the free-to-play version of a Crystal chest for players.
Muddy keys have a buying limit of 100 on the Grand Exchange, but they are relatively easy to buy since they have a high trade volume.
WARNING! This method takes place inside the Wilderness, players should not bring any items they are not prepared to lose. Protect Item is recommended to protect your gem bag if you are attacked and killed. It's also important to make sure that the gem bag, valued at 25,000gp, is the highest valued item in your inventory so nothing else will protect over it.
The muddy chest contains a lot of items, but not all of them are worth keeping. Due to inventory space constraints, only the most valuable items and stackable runes should be kept; the mithril dagger, anchovy pizza and coins should be dropped. Uncut rubies should go in the gem bag, and the rest of your inventory space should be saved for the mithril bars. This takes a fair amount of juggling the items and dropping the unwanted ones, but this way it's possible to open 24 chests each run.
Start your run at Edgeville bank, bring your gem bag and 24 muddy keys. Run east over the bridge to the canoe station. Chop down the tree and construct a Waka canoe and select Wilderness Pond. Warning! Players will be transported in level 47 wilderness. From the Wilderness Pond, run north west and enter the Lava maze. Slash the webs apart and avoid the black knights and hill giants, and make your way to the muddy chest at the end. Avoid the lesser demons inside the muddy chest area if they are aggressive. Start opening the chest, letting most of the items go on the floor, storing the uncut rubies in the gem bag and picking up any mithril bars that get dropped. When finished, you will have to navigate the wilderness to level 26 before you can teleport out. Players can expect 7 trips per hour if they are not interrupted or killed.

Youtube Video For this method 

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