|Upgraded to 300 dpi|
Big map, but I wanted to give the full size of it at the beginning. You can just see the small man in the center, on top of the lighter gray slab. A group of creatures emerges from hidden positions behind the undergrowth (the green patches show where the undergrowth is thickets, but there are trees scattered between the green). The large tree is shown behind the man ... that's not a bush. I'm somewhat limited at present by the speed of the program I'm working with.
There are eight of them altogether, and they appear to have intended to lie in wait for the party. Right now they rush forth, still moving at normal speed. They're not at all armored, but of course their tan-brown leather skins may be protective; they are all carrying quarterstaves; They appear to have large, reptilian heads, emerging from shoulders in a snake-like fashion, and would appear to weigh between 250 and 300 pounds. They're about 6 and a half feet in height.
I'll rule there's no surprise, since the party did suspect a trap, and I'll also rule that initiative going forward can be for the party. So please take action as you will. Directly behind you, not shown on the map, is the shallow pond you've just come across to get to this point (it's not a barrier, it only gets your feet wet again). The boat is on the other side of that ... and you have time to reach it if you run now.