Given the following context:

A small Myotis was captured at a cave in Latvia between 2007 and 2010; pending genetic testing, it is suspected to be M. alcathoe. However, this record had not been confirmed in the subsequent national report to EUROBATS in 2014.
Luxembourg
A single male was caught in 2011 and confirmed as M. alcathoe on the basis of genetic data. Elsewhere in the country it has been recorded on the basis of acoustic data.
Poland
The species was recorded in four caves in southern Poland in 2005 and 2006, and later at several other sites in the south of the country. It is known from 182 to 1,294 m (597 to 4,245 ft) above sea level, most often in beech forest (Fagus sylvatica), but also in several other forest types.
Romania
A single M. alcathoe was captured in 2007 in a nature reserve in the eastern Carpathians; the reserve contains riverine and conifer forest. The species was additionally recorded in a forested valley containing a small stream in Alba County.
Russian part of Caucasus
Bats collected in the Russian part of the Caucasus and in Abkhazia (a breakaway part of Georgia) from 2003 to 2009 may represent M. alcathoe. They are small and morphometrically distinct from other local Myotis mystacinus-like bats. The affinity of these bats to M. alcathoe has recently been confirmed by the genetic and morphological analyses.
Serbia
The species was reported on the basis of three specimens shortly before 2009, but is probably rare.
Slovakia
Here, M. alcathoe is known from a single site, a cave in old deciduous forest at 525 m (1,722 ft) altitude.
Slovenia
A single specimen was recorded in Slovenia in 2007, although it is not clear how many bats previously recorded as Myotis mystacinus belong to this species. Several additional specimens were later found in Kočevski Rog (SE Slovenia).
Spain

answer the following question:

In feet what altitude were the bats found in Slovakia 

1,722 ft