It looks like there is a chasm here, hot air rises up from it. From the corner of your eye you can see a faint light up above and to the left (you swear you heard cackling). No time for that, for certain you did hear shrieking! A Gargoyle and Shriekers are making their way towards you. It will take some effort to get across the swinging rope bridge you see not far away.

You now face; Shrieker, Gargoyle & Chasm!

Round 2+: add 1 Shrieker to the encounter each Round after the 1st.