Pharyngeal consonants are typically pronounced at two regions of the pharynx, upper and lower.
The epiglottal region produces the plosive [ʡ] as well as sounds that range from fricative to trill, [ʜ] and [ʢ].
[1] Features of the voiceless upper-pharyngeal stop: No language is known to have a phonemic upper pharyngeal plosive.
They appear for example in the speech of some children with cleft palate, as compensatory backing of stops to avoid nasalizing them.
The extIPA provides the letter ⟨ꞯ⟩ (a small-capital Q), to transcribe such a voiceless upper pharyngeal plosive.