The phrase "approximate location" means a general or close estimation of where something or someone is located, without giving the exact or precise details. Full definition
The second time, four years later, they observed it directly in the same approximate location. (sciencedaily.com)
It's also worth remembering that only real names are displayed on the site, alongside merely approximate locations. (top10sexdatingsites.com)
Belmont President and CEO James Place, along with the company's consulting experts, are interpreting data and mapping from Quantec Geoscience's Spartan Magnetotelluric (MT) Survey Report and have established approximate locations for drill holes. (resourceworld.com)