  We present the analysis of an unusual failed eruption captured in high
cadence and in many wavelengths during the observing campaign in support of the
VAULT2.0 sounding rocket launch. The refurbished Very high Angular resolution
Ultraviolet Telescope (VAULT2.0) is a Ly$\alpha$ ($\lambda$ 1216 {\AA})
spectroheliograph launched on September 30, 2014. The campaign targeted active
region NOAA AR 12172 and was closely coordinated with the Hinode and IRIS
missions and several ground-based observatories (NSO/IBIS, SOLIS, and BBSO). A
filament eruption accompanied by a low level flaring event (at the GOES C-class
level) occurred around the VAULT2.0 launch. No Coronal Mass Ejection (CME) was
observed. The eruption and its source region, however, were recorded by the
campaign instruments in many atmospheric heights ranging from the photosphere
to the corona in high cadence and spatial resolution. This is a rare occasion
which enables us to perform a comprehensive investigation on a failed eruption.
We find that a rising Magnetic Flux Rope-like (MFR) structure was destroyed
during its interaction with the ambient magnetic field creating downflows of
cool plasma and diffuse hot coronal structures reminiscent of "cusps". We
employ magnetofrictional simulations to show that the magnetic topology of the
ambient field is responsible for the destruction of the MFR. Our unique
observations suggest that the magnetic topology of the corona is a key
ingredient for a successful eruption.
