how to call base class method in case of virtual orerride ?

public class Class1
{
public virtual void hello()
{
Console.write("Hello Base Class");
}
}

public class Class2 : Class1
{
public override void hello()
{
Console.write("Hello Derived Class");
}
}

I know about the Base Keyword. but the BASE keyword work only within Derived class only . can we call " hello()" method of the base class in some other way. If we can then plz. help me ?

Sonu Pinghal