The double holes but with a single Zhulong (Dragon) head.This Jade (Nephrite) is elegantly finished and is unusual as there is an excavated piece but is double headed.The underside is concave and there is two holes bored.The grooves forming the face can be seen at an inclined angle,again illustrating the subtlety of Hongshan Jade aesthetics. Put in more images, as a picture is worth a thousand words.
Please visit the website of the Friends of Jade,given in the links for more info on Jade.