I'm not certain, but I suspect it is similar to this. https://files.tofugu.com/articles/japan/2015-10-23-bowing-in-japan/dogeza-bow-demo-video-poster-1280x.jpg

I'm not certain, but I suspect it is similar to this. https://files.tofugu.com/articles/japan/2015-10-23-bowing-in-japan/dogeza-bow-demo-video-poster-1280x.jpg https://files.tofugu.com/articles/japan/2015-10-23-bowing-in... But from the description in the article, add a platform, the bowed head is extended off the platform and down lower.