The trailer for a documentary, “Deep Web,” was recently released, and it centers on an anonymous marketplace titled the “Silk Road,” where illegal drugs were sold anonymously online. While watching the trailer, however, many may not understand exactly what the “Deep Web” is, so why not dive into it a bit?

The “Deep Web” is a term coined in 2001 that describes the invisible parts of the World Wide Web that are not indexed by standard search engines. What this basically means is that the websites commonly used by most of the world and that have normal URLs are part of the “Surface Web.” While you may think that the Deep Web is small because it isn’t apart of the World Wide Web, do not be fooled. The Deep Web’s size is nearly impossible to estimate, but it was originally estimated to be 400 to 550 times larger than the Surface Web.

Now that you have a basic — and I mean extremely basic — idea of what the Deep Web is, you may be able to understand the trailer and overall film better. Many government agencies and countries see the Deep Web as somewhat of a black market, and are concerned with its existence.

The film centers on the founding of the site the Silk Road in 2011 and the controversial arrest of its founder, Ross William Ulbricht. The site became notorious for the sale of illegal drugs and other crimes, possibly even murder-for-hire. The site, like much of the Deep Web, operates using bitcoins. The FBI arrested Ulbricht in 2013 at the San Francisco Public Library and was found guilty earlier this month of all seven charges he was faced with.

The documentary comes out March 15 and I’m sure it will ruffle some feathers and only bring more traffic to the Deep Web in coming months. Check out the trailer below.

https://www.youtube.com/watch?v=BRTps__Ym5M