In reply to Levy_danny:
Are you sure you mean Nant Peris? Or Nant Gwynant maybe?
I was going to say there's a huge car park at Nant Peris but not aware of any routes up Snowdon form there unless you take the bus to Pen Y Pas.
Assuming you mean Nant Gwynant you can park in Beddgelert and gut the S4 Snowdon Sherpa bus to Nant Gwynant.
https://diogel.gwynedd.llyw.cymru/GwasanaethauGwe/FfeiliauSystemau.Allanol/...
Not actually used this bus personally, but it seems to get you to the bottom of the Watkins Path.
Post edited at 08:59