So.... I've found a wizard who pointed a tower in the map to me... but I have no idea how to get inside!

I think I've actually found one of the crystals and I've found three towers I can't open and several huts...
I'm utterly stuck now, I had no idea of what to do next!

Well, I am not sure, but here are couple sites that might help.
Walkthrough
Ishar Cheats

Maybe you'll still find it useful:
To win the game, you need to find the 4 crystals and put them in the towers. You can't enter a tower before you have the corresponding crystal.
At the start of the game, the crystals themselves are on pedestals scattered around the island. As time passes, some of them will be captured by the forces of EVIL™ and moved to one of the caves - you'll have to look for them there.

Update: Disregard the question beloow I figured out how to get into the cave, sadly even tough I found loot, I have yet to find the last crystal. I dont seem to find any maps on the game. or walkthrough.

Got a question I got 1 crystal left. I found one in a cave. There was a message that the bad guys got two. There are other cave entrences that I cant enter, because there are bushing blocking the exit seemingly from all directions.. Is there like one big cave system, or multiple? I entered one on the small island and came out another, so I am guessing there is one big cave.

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