function mineTree()
    turtle.dig();
    turtle.forward();
    x = true;
    while x do
        turtle.digUp()
        turtle.up();
        if (turtle.detectUp() == false) then
            x = false;
        end
        turtle.digUp();
    end

    b = true;
    while b do
        b = turtle.down();
    end
end

function scout()
    for i=1,30 do
        turtle.turnRight()
        for i=1, 30 do
            if (turtle.compare()) then
                mineTree();
            end
            if (turtle.detect()) then
                turtle.dig();
            end
            turtle.forward();
        end
        for i=1,30 do
            turtle.back();
        end
        turtle.turnLeft();
        turtle.forward();
    end
end

turtle.select(1)
turtle.refuel();
turtle.select(2);

scout();