What does this number measure?
A Pyrenean summit that hosts an astronomical observatory. Pic du Midi de Bigorre offers an observing point above part of the atmosphere and surrounding terrain. The comparison uses the summit's altitude.
Compare the stated dimensions
The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.
Source and limitations
Catalogue order of magnitude; a source is provided, but this measurement has not been individually audited.
Pic du Midi de Bigorre: an interpretation of the rocky summit supporting the observatory. Buildings, snowfields and slopes are interpreted; the value is the summit's altitude, distinct from this cutout's visible height.