The excellent ‘Hampshire Treasures’ resource gives the following information – “Holman's Bottom. Bowl Barrow. 11m.diameter and 0.8m. high. Traces of a ditch. Gorse covered and mutilated by rabbits.”
The OS map marks another barrow just a few hundred metres to the North, but I couldn’t find out anything about this. The map is also intriguingly marked with ‘Naked Man - site of’, just to the east. I wonder what all that is about? The area also contains Scrape Bottom – ouch!