Elves, dwarves, and humans once walked this land and built on it. For the past eight hundred years, no sapient being has disturbed the ruins.
"Yes but not with a fishing stick! I sometimes swim around and catch fish if I feel like it."
"That sounds fun! I bet you could do that off the boat if you wanted, since if you fell behind you could catch up by flying."
"Now that sounds like something to watch. Are you just super strong, or do you sprout fins like you do wings?"
"Hey, exercise is fun! But it really is a pity we can't swap magics. I think we've gotten all we're going to get out of this thing for the moment, let's go explore the city some more."
They head along the south side of the river, checking out any ruin that looks at least vaguely recognizable. Most of them don't have anything interesting.
This one has a pack of angry snakes in it! They coil up on their tails and launch themselves at the explorers like springs.
Cayra, suddenly very scaly, steps in front. They can break their teeth on her if she wants.
Derron alsp steps to the front. One or two of them get far enough to break their teeth on Cayra, but the rest fall out of the air as though punched in the head by invisible fists.
"You mean me, or the angry bedsprings?" Says Derron, finishing off the last couple snakes. "I must have forgotten to mention--I'm the security for this expedition."
"Magic! One of the things it can do is apply bursts of force to things, including snake heads. I've never seen a snake go boing like that, though, they don't do that back home."
"Yeah, I think that might have been magic. I'd need to see it happen again and not as a nasty surprise before I could be sure, though."
"Derron seems to have taken out all the ones here, but if we run into any more it would be very interesting to take one alive."
"I'm going to start dissecting one of the dead ones, see if there's any obvious way they could have flung themselves that high without magic." Chaenath suits action to words.
"Sounds like a plan! Want to take a look around here while Chaenath is getting her hands dirty, see if there's anything cool in here?"
They check out the rest of the ruin, finding a handful of little metal bits that have managed to survive the elements. The best finds are a pair of rusty but cleanable pliers Derron digs out of some rubble, and a single emerald earring Cayra finds in the snakes' nest.