7. the Antelope

Kneeling on the ground, the woman holds the edge of the bed and straightens her back. The man kneels down and penetrates her from behind.

Variant: the woman can open her legs wide on either side of her partner's to offer him a maximum opening, or she can tighten her thighs to compress her yoni and squeeze her partner's lingam.

Plusses
Good stimulation of the yoni's forward wall.
The man can easily stimulate his partner's yoni and breasts with his hands.

Minuses
Beware of scraping your knees on the ground unless you have a thick carpet.