Robert has found a piece of parchment that describes where the treasure of famous pirate Redbeard is buried. The text reads:

Travel to the wooden gallows on the island Vlieland. From the gallows one can see the only two trees on the island, an elm and a beech. Walk from the gallows to the elm and count the number of steps. At the elm, turn 90 degrees clockwise and walk the same number of steps. Mark the location. Go back to the gallows and walk from the gallows to the beech again counting the number of steps. At the beech, turn 90 degrees counterclockwise and again walk the same number of steps. Mark the location. The treasure is buried in the middle between the two marked locations.

Robert travels to the island Vlieland. There he quickly finds the two trees, but the gallows apparently is gone, because it is nowhere to be found.

The question: How can Robert find the treasure, without needing to plough up the whole island?

The answer: Click here!