Building and operation of the railway has cost £26.75m so far
Bosses from Highlands and Islands Enterprise (HIE) are to give evidence to MSPs reviewing public spending on the Cairngorms' funicular railway.
Acting chief executive Sandy Brady, director Douglas Yule and property chief Keith Bryers are due to appear before the public audit committee.
HIE has provided £19.42m of more than £26m spent on the railway so far.
Operator CairnGorm Mountain has started its winter season, but is only running the railway and ski lifts at weekends.
Marketing manager Tania Alliod said closing the funicular and lifts midweek when demand was low had been common practice for several years.
She said the situation would be reviewed if more snow allowed the opening of more than the two runs open at the moment.
The audit committee is gathering evidence on the financing of the funicular following an investigation by spending watchdog Audit Scotland.