Here's an account of Culp's death at Gettysburg.
View attachment 516452
View attachment 516453
Shepherdstown Register, Shepherdstown, WV, 7-6-1922.
One good source can change everything (although it does not always clarify matters). Presuming Culp was killed alongside of Private John W. Snyder and 4th Sergeant William Arthur, both from Company B, under "bullets and shells" and amid "great boulders and rock" would point to Company B being posted at the time (the morning of July 3) along the rock wall on the north side of Spangler meadow, where nearby large boulders sheltered a portion of the 1st North Carolina (recall the Coble carving there).
But the article also mentions Private Daniel Morgan Entler of Company B, whom records show was wounded on July 2. If July 2 is accurate, we would also have to consider that Culp might have been killed near the Hanover Road when the regiment was deployed on the left flank of the division to guard against Federal cavalry. However, Entler's wounding might have not occurred in the same vicinity as Culp's death, or maybe Entler was actually wounded on July 3, instead of July 2 - such dates given are often inaccurate.
What else do we say about the 2nd Virginia's deployment during the battle? Well, it is known that Companies I and K were left behind on July 3 to guard the division's flank near the Hanover road, meaning the regiment moved against Culp's Hill with only the remaining eight companies.
We know Company C was at one time posted behind the rock wall bordering the north side of Culp's Hill - see:
Captain William Wellford Randolph's Company C and four other companies of the 2nd Virginia were "crowded close under the breastworks" for protection against artillery and infantry fire on July 3. I believe these works reference the stone wall that ran along the north side of Spangler meadow...
civilwartalk.com
We are informed that Company D was posted on the east side of Rock Creek to include the Z. Tawney place.
We also learn (from the Supplement to the Official Records) that Company E was deployed as skirmishers.
But unfortunately I have no information on the precise positioning of Companies A, B, F or G (although a casualty analysis might shed some light on where those companies fought).
The bottom line is that the Shepherdstown Register article provided by
@RedRover suggests (to me anyway) that Private Culp was killed on the main Confederate line west of Rock Creek and not while deployed as a skirmisher east of Rock Creek. In that case, we can expect that he would have been buried by Union troops alongside other Confederates as an "unknown" soldier in a mass burial trench at the foot of Culp's Hill on July 4 or 5.