Fighting just north of the landing. There was nothing preserved or interrupted (except CWT marker) about the battles of Deep Bottom or New Market Heights.
Bill and I split up Thursday morning so we visited the same area separately.
You can take I295 and get off at the Hwy 5 (New Market Road) exit then proceed east toward the Malvern Hill Battlefield.
From there take 156 north to Darbytown Road and proceed west on that road until you get to the vicinity of the Ft Harrison NPS property. Go south along it until you run out of park to see then proceed back east via Kinglsand Rd and New Market to your starting point.
Explore the main roads in between and you will have covered the battles of Chaffins Farm, New Market Heights, Darbytown, First Deep Bottom and Second Deep Bottom. Grab some battle maps from civilwar.org and the NPS to take along.
Those directions may seem vague but its not that big an area.