Boy conceals scheme—to visit Santa here? (7)
I believe the answer is:
lapland
'visit santa here?' is the definition.
'boy conceals scheme' is the wordplay.
'boy' becomes 'lad' (lad is a kind of boy).
'conceals' is an insertion indicator.
'scheme' becomes 'plan' (I've seen this before).
'lad' going around 'plan' is 'LAPLAND'.
'to' is the link.
(Other definitions for lapland that I've seen before include "Region of northern Europe" , "North Scandinavian region associated with Santa Claus" , "part of Europe" , "Arctic region" , "Region of N. Europe" .)