There are a number of nodes with "leisure"="picnic_site" in this region. This tag is deprecated. If you know the place please consider changing it, e.g., to     leisure=picnic_table if it is just a table or tourism=picnic_site if there are some additional facilities like waste baskets etc. (see https://wiki.openstreetmap.org/wiki/Tag:tourism%3Dpicnic_site for more details)