There is one in right front of Silvermoon at the end of Dead Scar. Unfortunately lvl 5 mobs do not make skill leveling that practical even for really low level characters due to having constantly press keys to target mobs + attack as they die from single hit.

If you're after skillups try the naga's on the beach - specifically the ones that heal. Grab a sub level 10 weapon of the weapon skill type you need to level then start swinging.

The pirate ships in Tanaris are not infinite - but they're on a very rapid respawn. Lvl 44-45 mobs.

For skilling up weapons on my (alliance) alts I go to the Deeprun Tram and kill rats. The rats spawn just inside the tunnel and path along the platform then around to the outer side (either left side or right). Kill the long pathing rat and a new one spawns 1.5 secs later just behind where Morty stands.
No drops obviously, but 0-200+ takes mere minutes.