Aggie Oakland Mallard must have been a special person in Redcliff because they've named a small urban park after her.
Since it is a park, extreme stealth is required to retrieve the cache. You may also need a partner or a special tool (maybe your partner is a tool!)
Not too much fear of strange critters (other than prying eyes) so you're good to go. Parking is right beside the cache in the alley, if you wish, or you can take a very short walk from the street parking.
please replace the cache as found and no spoilers please!