None other than Jay Rockefeller:

"Former Sen. Jay Rockefeller's (D-WV) Rock Creek Park mansion is one of Washington’s most luxurious residences. The 1920's era house sits atop a leafy 16-acre estate known as “The Rocks” and has two mailing addresses. The main gate is on Shepherd Street in Crestwood and a second winding driveway cuts across National Parkland to connect with Park Road.

The public got a rare look inside the palatial estate in 2008 when Rockefeller hosted a fundraiser for the Obama campaign. A New York Times reporter was in attendance and described what he saw:

“Our night began at The Rocks, Jay Rockefeller’s chateau away from chateau deep in the hills of Rock Creek Park. To reach the site of this particular Obama fundraiser, you wind along the edges of Rock Creek Park and then turn up a steep, long, hey mistah Rockefeller, how about $3000 to shovel your driveway sort of entryway. … There are oaks and Chestnut trees and then there’s the house, with four Ionic columns and a slate roof and 17 windows across the front and the Rockefellers apparently suffer no critical shortage of guest bedrooms. It is a useful reminder that before the Gates and Bloomberg and Warren B., there was old man John D. Rockefeller, who bequeathed successive generations of descendants a truly astonishing boodle of money.”

Rockefeller bought the 21,000 square foot house for $6.5 million in cash when he was elected to the Senate."

https://architectofthecapital.org/posts/2016/7/12/rockefeller-mansion-in-rock-creek-park

Here's the original pizzagate research on the tunnels connecting Alefantis' properties and Rock Creek Park:

Game Over: Alefantis’ Properties (CP, Transformer and Pegasus Museums Perfectly Align with Newly Discovered Tunnels! (pizzagate)

submitted 1 month ago by quantokitty

In my opinion, there is no way this could be coincidental! All JA’s properties perfectly align with what we know about the newly discovered tunnels! I even punched in the Pegasus Museum and it was a perfect match! Now we have a reason for why he bought the properties he did. The 3518 property was so strange, but not when you know about the tunnel system that is known to exist.

First, a link to an article on the tunnels Harrison G. Dyar built: https://ggwash.org/view/9513/hidden-tunnels-bugs-and-bigamy and to my previous post on the discovery of the tunnels: https://voat.co/v/pizzagate/1551092

In the article, it says workmen were excavating property at 2115 P street northwest. This will come into play later on.

Now I first did a map with four locations: Rock Creek Park, CP, The Transformer Museum (1404 P Street), and 2115 P Street. I included the ROCK CREEK PARK because is known that a tunnel runs from P STREET TO ROCK CREEK PARK. Yes, it’s confirmed in this link: https://ggwash.org/view/9513/hidden-tunnels-bugs-and-bigamy What is unknown is where Dyar tunneled along P Street (there is mention of P Street to V Street and also at E and B Streets), but no confirmed addresses. Since 2115 is confirmed by workmen digging at that site, I figured I’d use it. Here is the result: http://archive.is/lnaRc

You could draw a straight line from THE TRANSFORMER MUSEUM and the 2115P Street location!!!

Then I took put in the new PEGASUS Museum. This is what I got!!! http://archive.is/ou9Th

If you take out CP and add in E Street (yes, we know from other articles that Dyar dug at E street), LOOK WHAT HAPPENS. http://archive.is/fQ8Jn

It’s a perfect match! It’s almost a perfectly straight line up from The Transformer Museum up to PEGASUS.

EDIT: I’ve been receiving major pushback for this post. I know I’m onto something when that happens. I’m still looking into this and have found a few more facts and photos of the complexity of these tunnels. They were not the work of an amateur who had spare time on his hands. Will either update this one or start a new one. Most likely update this one with new information that may tie in another person of interest"

https://www.daysworld.org/2017/02/page/2/