Next summer seems like an eternity to wait for 'Jurassic World,' but as long as director Colin Trevorrow keeps teasing the new sequel via awesome behind the scenes pics, we'll keep waiting patiently. Today brings yet another photo from the set, and this time things are a bit bloody.

Trevorrow posted the photo on his Twitter page with the description "Saturday, 4AM." The photo is of a mobile veterinary unit with a bloody handprint on its side. Sure, it's not like it's a huge thing to speculate about -- it's pretty obvious -- but it's still pretty cool. Most of the images we've seen thus far have been rather tame, with pics of stars like Chris Pratt, who plays a raptor researcher, and Bryce Dallas Howard, who seems to be an authority figure of some kind.

The new film takes place on a fully functional Jurassic Park on the island of Isla Nubar sometime in the future, where a genetically modified dino begins to wreak havoc on the theme park. 'Jurassic World' also stars Vincent D'Onofrio, Jake Johnson, Judy Greer, Irrfan Khan, Ty Simpkins, Nick Robinson, and BD Wong, and hits theaters on June 12, 2015.

Check out the new behind the scenes pic:

Colin Trevorrow, Twitter/Universal
Colin Trevorrow, Twitter/Universal