{exp:channel:entries channel="some-channel" limit="1" status="open|featured" show_future_entries="yes" show_expired="yes" disable="pagination|trackbacks|member_data"}

{!-- Step 1- Set Stash Var --}
 <a href="{location-map}{exp:stash:set name="map-url"}somelink.com/?q={some-var},{other-var}{/exp:stash:set}{/location-map}">{location}</a>

{!-- 2 - Get Stash Var --}
<a href="{exp:stash:get name="map-url"}">View on Google Maps</a>

{/exp:channel:entries}