Here you are at the last cavern of the game. This cavern is not particularly large or labyrinthine. There are also few enemies, but they are particularly tough. You will then have to find the right pillar to press to open the door, in the midst of many other false ones, and break down many obstacles to reach the exit door.
As soon as you start the level, you will notice many pillars in front of you, but none of them are the right one, jumping on them nothing will happen. Dig the loose soil to the right of the second small pillar to explore the area below. You will arrive in an area with a slippery floor, where you can find a diamond. Then go back upstairs, climbing up. Proceeding to the right while jumping on the pillars, you will encounter a motionless green dinosaur throwing dinosaur eggs and blocking your way. You will soon learn that the only way forward is behind that dinosaur. But you can't kill it in any way, the stones just tickle him. There are two ways to go further. You can place a stick of dynamite in front of it (better if you have a good supply) and move away quickly, taking you to the small pillar on the left. When the dynamite explodes, the dinosaur will turn pink and retreat a few steps before returning to its original position. You will then need to take advantage of this brief moment and move quickly, to jump over the dinosaur as it backs off. Alternatively, you can place a diamond in front of it. This way, the dinosaur will move forward to reach it and you can jump over it. If you still have some diamonds in your inventory it is definitely best to use this second strategy, which is easier.
After passing the dinosaur, keep going right as long as you can. There are 2 mushrooms in the ceiling above you. Activate at least one. Then go back a few steps and go down along the ground you can cling to. You will notice two pillars below you. Jump on the one on the left, which will turn out to be the only real pillar and will open the door. At this point, you should hurry directly to the door, trying to reach it within 60 seconds. It is useless to explore or collect items now, you are at the final cavern. Make it or brake it.
Go down to the right, into the space between the two pillars and continue to the right, digging the loose soil. You will come to a small column, which you will need to take down. If you were quick, you may still have the power of the mushroom active and knock it down with a kick, otherwise you will have to use dynamite. Quickly continue to the right. There are some stones hidden in the ceiling, but at this point you should ignore them. You will encounter another small column to be knocked down, so quickly place another dynamite. Continue to the right, sliding on the frozen ground. You will encounter another dinosaur similar to the one you passed earlier. To overcome it, you'll have to make it temporarily back off with dynamite or distract it with a diamond, as described above. Continue to the right. You may find a diamond high above you. Make your way through the slippery ground and you will end up in a small hole. Touch the right wall of this cavity to find a secret passage. Go down and you will meet another column to be knocked down with dynamite. Do it quickly and proceed to the right. Note: if instead of entering the hole first you had proceeded to the right, you would have arrived here anyway, but you would have had to knock down 3 columns instead of one, wasting precious time. Go down by digging the loose soil below you and proceed quickly to the left, on the slippery ground, to meet the last dinosaur that throws eggs. The exit door is right behind it. Dynamite won't do you any good here. You will need to place a diamond in front of the dinosaur, to lure it forward and jump over it. Hurry up and take the passage behind him to reach the exit door before it closes. If you succeed, you have completed the game. Congratulations!
At the end of the final scene, the words "To be continued" are shown, but a sequel to this game was actually never made.