Here it starts to get serious. Walk to the right, jump over the small precipice and dig the loose soil. Don't touch the pink rock and keep going to the right, ignoring the paths that go down. You should find a pile of stones and maybe even a ladder at the end. You will notice that in this cave you will often be attacked by mosquitoes, when they get close, eliminate them with a blow of the shovel. Be careful not to have mosquitoes nearby when you enter the narrow passages though, as while lying down you cannot attack. Go back a few steps and dig the loose soil below you, proceeding to the right. Eventually you will find some other items.
Then go back to where you started the level and drop into the first small precipice you crossed. You will still have to be crawling when you enter it: this way, you can cling to the wall below. If, on the other hand, you enter the gap standing, you will end up directly lower and lose a few notches of life energy. In this level you will in fact discover that falling from great heights can be very dangerous. Proceed to the right and drop the lower pink rock with the shovel to proceed. Behind you may find another ladder. Then hit the ceiling with the shovel, there is a point where you can get a mushroom. After you find it, kick it and grab it. You will become pink and very strong for a few seconds. Take advantage of it and quickly go down the small precipice on the right, go left and destroy with a kick the small wall you will encounter. On the right you can then get another mushroom and maybe dynamite. Ignore the loose soil on the right for now and proceed to the left.
You will find the pillar to press. For the moment, however, you can also ignore it. In many levels, including this one, it is advisable to first collect all the items and clear the way to the exit door. This way, after pressing the pillar, it will be much easier to reach the door before the time runs out. Proceed to the left of the pillar and in the tunnel you may find a diamond. Then go down and hold on to the wall. At the bottom, proceed to the right and hit the ceiling in several places to find more piles of stones and a mushroom if you need to. Finally, touch the wall on the right and you will be teleported. In the new area you will find more stones and another mushroom in the ceiling. Proceed to the left collecting the items you will find and take the tunnel that goes up, digging the crumbly soil. When you get a chance to go up, do it. Proceed by digging to the right and dropping the pink rock, then drop down. You might find some dynamite. Jump to the right and hitting the ceiling at the bottom will find more stones. Don’t hit the pink rock above if you don't want to commit suicide. Then go down. You can destroy the thin wall on the right with dynamite, but behind it you'll only find a pile of stones in the ceiling, so it's not worth it. To the left, to go down, you should throw a ladder (by now you should have set aside some), otherwise you will lose some energy bars.
Below you, you can now see the exit door. Proceed to the right and drop the two pink rocks in front of you. Behind you may find another ladder. Then go back and proceed to the left. You will now need to tear down two thin walls in succession to proceed. To do this, you can place a stick of dynamite near it, but there is also a better method. In the ceiling above you, you will find some stones and two more mushrooms. Using a mushroom, you will be able to knock down the two walls with a simple kick, thus saving the dynamite. Continue to proceed to the left, collecting all the items you will encounter, on the ground and from the ceiling, ignoring for now the path that goes down. You will arrive in a room where you cannot proceed further. If you tap the wall on the right though, you'll be teleported right above the pillar. Press it.
At this point, you have to reach quickly the door. The shortest route is the following. After pressing the pillar, go right. Drop down, go right again and drop down. You will come to the point where you threw the ladder. Proceed to the left and drop to the lowest point of the cave. To reach the door, however, you must first defeat a dinosaur. Stay at a distance and throw stones at it until you kill it. It will take about 10. Then go to the door to complete the level. If you were quick, you should still have over 40 seconds on the timer and you can find 2 more diamonds in the next bonus room.