This morning, BBC Scotland's "Out of Doors" programme had a 12 minute segment on this closure. See:
Out of Doors 14/08/2021
The segment starts at 35:30.
They interviewed Tim Atkinson, Factor on the Ben Alder Estate; Brendan Paddy, Director of Ramblers Scotland; and Jen Dickinson, Chair of the Dalwhinnie Community Council. They read a written statement from Network Rail and an opinion from Malcolm Combe, Senior Law Lecturer at Strathclyde University.
[Warning and apols, long post - I have put a shift in!]
Thank you again for that. Had a listen, locals were all measured and remain bemused. NR will need to field their top people when they do meet to fully explain, which they surely will have to do. And the sooner the better.
Options such as proposed by
@Killingworth up-thread could be explored but someone will need to find some money of course. The station footbridge was mentioned as being in a poor state of repair and already an on-going issue!
The 'Lawman' implied that his opinion was that the Land Reform (Scotland) Act 2003 was not helpful and that to proceed with a formal challenge there is a need to prove of the existence of a Public Right of Way. [My honest opinion is that will not be possible]
The starting point is likely to be the enabling Act under which the railway was first authorised, 'The Inverness and Perth Junction Railway Act 1861'
The Act in question was advertised within page 2998 The London Gazette of July 23rd 1861 as:
An Act for making a railway from Forres to Birnam, near Dunkeld, with a branch to Aberfeldy, to be called "The Inverness and Perth Junction Railway;" and for other purposes.
The Act will contain the rights, benefits and obligations placed upon the Railway Company and the owners/tenants of the time with respect to (amongst other things) access. I have found a copy on the net but cannot get access without a professional login (which as an individual I do not have).
0: [object Object]. 1: [object Object]. 2: [object Object]
vlex.co.uk
Others may be able to help or perhaps find another source!
[Network Rail will have a copy]
I had a look at 2 copies of the Core Map. The definitive copy at Highland Council (who have the prime responsibility for the record) and at NatureScot. Although each is slightly different both show the path using the underpass and avoid the level crossing. I am unable to find any update record for these, others may be able to.
highland.maps.arcgis.com
Let local paths take you to and from work or school, to activities and to see your friends. You’ll get fresh air and exercise on the way – and all for free.
www.nature.scot
Finally Highland Council have not, insofar as I can tell, been quoted or involved in any of the articles or discussions, a chat with someone in the Core Maps Office might throw something up.
I do hope that a solution can be found which will suit everybody. It will take some skill, some time and a bit (possibly quite a bit) of money but there has to be one out there.