Given the hypothetical details you've provided, it should be noted that Penparcau Beach as described in your prompt does not exist in reality in Aberystwyth, United Kingdom, or might be referred to by a different name locally. Aberystwyth is known for its picturesque seafront and beaches including North Beach, South Beach, and Tanybwlch Beach. However, for the purpose of your request, let's imaginatively describe Penparcau Beach as suggested: