Air carrier captain reported a GPWS terrain alert during a visual approach to kdro.

Attributes
ACN	1447043
Time
Date	201705
Local Time Of Day	0001-0600
Place
Locale Reference	ZDV.ARTCC
State Reference	CO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Inflight Event / Encounter CFTT / CFIT

Narrative:

Due to the wind from 160/20 at kdro; we selected the favorable runway 21. The weather was clear and visibility more than 10 miles. During right base turn for visual approach to runway 21 as we were descending; GPWS alerted 'terrain; terrain; pull up.' we stopped the descent and leveled off. The GPWS alert went away. We landed normal without any other issues. The lesson to be learned from this event is not to descend too fast in this particular area due to the terrain.

Original NASA ASRS Text

Title: Air Carrier Captain reported a GPWS Terrain alert during a visual approach to KDRO.

Narrative: Due to the wind from 160/20 at KDRO; we selected the favorable Runway 21. The weather was clear and visibility more than 10 miles. During right base turn for visual approach to Runway 21 as we were descending; GPWS alerted 'Terrain; Terrain; Pull up.' We stopped the descent and leveled off. The GPWS alert went away. We landed normal without any other issues. The lesson to be learned from this event is not to descend too fast in this particular area due to the terrain.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.