H.E.S.S. image of the VHE γ-ray excess in the direction of SNR W41 after standard cut analysis. The image was smoothed with a Gaussian kernel of 0.068° corresponding to the instrument’s point-spread function for this data set, which is shown in the inset. Green contours represent the GRS ¹³CO data around W41 integrated in the velocity range 74 km s^-1 to 82 km s^-1 and smoothed with the same kernel. White contours of the VLA radio data at 20 cm show the shell-type SNR. The position of CXOU J183434.9−084443 and the brightest OH (1720 MHz) maser are indicated with a triangle and a cross, respectively. The linear color scale is in units of counts per smoothing Gaussian width.