I'm not sure how helpful this is, but the OED says "where" can also mean "in which" when introducing an additional statement, and certainly you could substitute "in which" for "where" in your example. Yes it's correct, and perfectly understandable. Here's the relevant entry, with attestations:
I particularly like the 1584 spelling of where as quhair
b. Introducing an additional statement (cf. 7b): In or at which; and
there; hence, †whereupon, and then.
c1500 Melusine (1895) 238 She consyderyng the daunger where bothe
she & her peple had be
1584 King James VI & I Ess. Prentise Poesie sig. Kv Ignorants
obdurde, quhair wilfull errour lyis
1597 Shakespeare Richard II v. ii. 5 Yorke. Where did I leaue? Du.
At that sad stop my Lord, Where rude misgouerned hands..Threw dust..on
king Richards head.
1692 tr. C. de Saint-Évremond Misc. Ess. 98 There is no life so
regular, where particular Actions don't sometimes exceed the general
habit and conduct.
1792 Jrnl. House of Commons 2 Apr. 47 641/2 In a Case where the
Officers had broken into a Bedchamber.
1887 W. P. Frith Autobiogr. I. xxi. 284 It is difficult to put
one's finger on the precise spot where confidence merges into conceit.