Cool Cool Cave is the fourth level in the first world of DK: Jungle Climber.
Overview
The level beings outside, where the player has to climb up pegs. They should attack the first Flitter, then face the breakable wall and use the 
Button to attack, where they can then destroy the wooden barrels and obtain the Oil Barrel. They should then climb higher up the pegs towards the left and attack the second Flitter who will give the player the first of the level's Banana Coins. The player should then climb further up the pegs, jump into the Booster Barrel. They will be launched onto a ledge. The player should jump down and collect the K, then jump back onto the ledge and continue onto the next section.
The player will now be in a cave. They should walk over to the right, where they will see a large boulder with pegs on it. They should grab onto the left side of the boulder, and it will start rolling in that direction. The player should climb up the side of this boulder to keep it rolling towards the left. Once in reach, the player will be able to obtain the second Banana Coin. They should then roll the boulder towards the right, then jump onto the rock ledge. The player should then touch the DK Barrel, then they will team up with Diddy Kong. The player should then climb up the pegs, and attack the Neek. They should then jump onto the boulder and roll it over the wall on the right and then climb up the pegs. They should jump into the Booster Barrel, and they will get launched over to the other side. They should then jump into the other Booster Barrel, then collect the O and the third Banana Coin, then jump down back into the Booster Barrel. They can then continue on to the next section.
In this next section, they player will see Cranky Kong. He will explain about the Diddy Attack. When this lecture is over, the player should touch the DK Barrel (if they don't already have Diddy), and then grab onto the pegs and use the Diddy Attack to grab the fourth Banana Coin. They should then use the Diddy Attack to hot the wooden barrel marked with an ? to make more pegs appear. The player should then climb up these pegs and then attack another ? barrel to make another set of pegs appear. Again, the player should climb up these pegs, and use the Diddy Attack to attack the breakable wall and destroy another ? barrel. The player should then grab the N.
The player should now climb over to the right and attack the Neek. They should then use the Diddy Attack on the two wooden barrels above the pegs where the Neek was (the one closest to the wall contains the final Banana Coin). The player should then climb up the pegs on the left, attack the two breakable walls, and then, carefully avoiding or attacking the bats, use the Diddy Attack to hit the ? barrel. They should then climb up the pegs, grab the G and then climb up the pegs and out of the cave. They then has to climb up the outside pegs and jump into the gap on the left. Here, the player can use the Diddy Attack to collect jewels and, with careful aiming, the DK Coin.
The player can then go back outside and walk through the exit gate, thereupon gaining access to 1-5: Cliffy Peak.