This yantra is dedicated to the goddess Annapurna, associated with Lord Shiva. She is easily recognized as she holds a ladle in her hand. Annapurna assures a constant supply of food and grain. The bindu in the centre is the 'bija' or the seed, within a red triangle. A green circle forms its circumference, touching the three points of the triangle within. This lies on a bed of four wide lotus petals again enclosed in a circle. A common feature in most yantras is the concentric circle of eight lotus petals and sixteen petals, completing the diagram. This structure is enclosed within a square bhupura or the ground plan.
The holy symbol of 'Aum' forms the border, keeping the sanctity of the diagram intact.
This description by Kiranjyot.