Nasa Yuwe (sometimes referred as Paes) is a language spoken in Colombia. The vowel system has four vowels timbers [i, e, a, u] that can be oral or nasal (short and long); breathy, breathy nasal; glottal, glottal nasal. This makes a total of 32 contrastive vowels. This study examines the acoustic and articulatory characteristics of each type of vowel. Data come from synchronized acoustic, EGG and fiberscopic measurements. A special focus is given to the acoustic and articulatory features of breathy and glottal vowels. The breathy character appears in the last part of the vowel. This is realized by a slightly wider opening between the vocal folds or by an aperture between the arytenoids. The glottal character of the vowels also appears at the end. The data clearly show that glottal vowels are different from a laryngalized counterpart. Spectrographic and EGG observations show irregularities towards the end glottal vowels. These are followed by a closure or a stricture made either at the glottis or in the epilaryngeal tube. Fiberscopic and EGG data show that there is a glottal closure at the end of these vowels. This closure precedes a closure of the ventricular bands.